​​​​​​​Ferroic Domain Walls: Domain walls are a very special type of interface, separating regions with different orientation of, e.g., the magnetic or electric order in a material. They occur naturally and, in contrast to conventional interfaces, can be generated, moved and deleted at any time. Because of this additional degree of freedom, domain walls hold great promise as active 2D materials for next-generation nanoelectronics. Our vision is to use domain walls into atomicscale devices and emulate the functionality of electronic components, enabling conceptually new domain-wall-based nanotechnology. The activities on ferroic domain walls are led by Jan Schultheiss, Erik Roede, Kasper Hunnestad, Ivan Ushakov, Jiali He and Ursula Ludacka. For further details, please refer to our work published in, for example, Nature Materials 16, 622 (2017), Nature Nanotechnology 13, 1028–1034 (2018), Nano Letters 49, 1659 (2019) and Appl. Phys. Lett. 116, 262903 (2020).

 

​​​​​​​Low Dimensional Spin Textures: The intriguing functional properties and nanoscale physics of magnetic whirls, so-called skyrmions, led to an explosion of interest in topological spin textures. Recently, we revealed that a much larger zoo of topological spin textures exists, involving magnetic disclinations and dislocations, as well as domain walls, which occur naturally in helimagnetic materials. We are fascinated by the additional functionality that arises from the magnetic order, offering fundamentally different correlation physics and new possibilities for spin-based applications. In our team, Mariia Stepanova is looking at understanding these systems from a fundamental perspective; Erik Lysne is focusing on controlling the non-trivial spin textures with external stimuli and Markus Altthaler is investigating the transitions to how they form in different systems. Completely new functional systems are synthesized by Payel Chatterjee and Longfei He. The activities are part of the Center for Quantum Spintronics (QuSpin), a new Center of Excellence at NTNU funded by the Norwegian Research Council. Our discoveries related to non-trivial spin textures are reported, for example, in Nature Physics 10, (2018), Nature Communications 7, 12430 (2016) and arXiv:2103.14449 [cond-mat.mtrl-sci] (2021).

 

​​​​​​​Nanostructuring and correlated microscopy: Modern characterization methods are revolutionizing the study of materials, allowing the observation of ever smaller structures, atomic positions and related functional phenomena. We are particularly interested in new experimental strategies and advanced techniques that go way beyond merely observing. For example, we use focused ion beam (FIB) to manipulate materials with high precision, modifying and fabricating structures on the nanoscale. Together with correlated scanning electron and scanning probe microscopy (SEM and SPM), this enables a new level of precision in the study of functional topological systems. The work is led by Erik Roede, Kasper Hunnestad, Jiali He and Erik Lysne, who work with the state-of-the-art dual beam FIB-SEM at NTNU NanoLab to engineer electronic and magnetic properties in a range of functional materials, ultimately aiming toward applying them in future nanoelectronic devices. In our recent publication in Appl. Phys. Lett. 115, 122901 (2019) you can read, for example, how FIB-SEM can be used to study the physics of individual ferroelectric domain walls at the nanoscale and contact-free switching of domains. For a more general review from our team, please refer to J. Appl Phys. 128, 191102 (2020) or APL Materials 9, 021105 (2021)

 

​​​​​​​Advanced atomic-level imaging: The electric and magnetic properties of materials are intimately related to the atomic-scale structure and chemistry in all three dimensions. On the one hand, we apply different transmission electron microscopy (TEM) techniques to image structural details. In addition, to understand the physics of topological defects, their chemical composition and emergent functionalities, our team combines high-resolution TEM with 3D Atom Probe Tomography (APT) using the newly installed Cameca LEAP 5000 XS system at the Department of Materials Science and Engineering. The research activities are driven by Ursula Ludacka and Kasper Hunnestad, using high-resolution TEM and APT as advanced analytical methods for 3D quantitative mapping of the atomic structure and composition in functional ferroic materials. Our goal is to explain the local chemical structure with unprecedented completeness and precision to clarify the origin of their intriguing and unusual physical properties.

 

​​​​​​​Micromagnetic simulations: In addition to our experimental activities, we are using numerical modeling to investigate topological magnetic spin textures and their response to magnetic fields, electrical currents and spatial confinement. The micromagnetic regime spans length scale sufficiently large to ignore atomic fluctuations, yet small enough to reveal the complex interactions of magnetic degrees of freedom at the level of domains, domain walls, and local defects. For purpose, we use MuMax3, a GPU-accelerated micromagnetic framework which calculates the space- and time-dependent magnetization by solving the Landau-Lifshitz equation using finite difference discretization. Using MuMax3, we can relax a system to its energy minimum in order to reveal the ground state of the system, investigate the effect of spin-transfer torque and thermal fluctuation, and test the behavior of the spin system in device-like geometries. Micromagnetic simulations are conducted by Mariia Stepanova, Payel Chatterjee and Longfei He. For recent examples of our work combining micromagnetic simulations and MFM, please refer to arXiv:2105.00658v1 [cond-mat.mtrl-sci](2021) and arXiv:2106.08791v1 [cond-mat.str-el](2021).

 

Our laboratory

Our team runs one of FACET’s laboratories, devoted to advanced characterization of electric and magnetic properties at nanoscopic and mesoscopic length scales. In our lab we have two state-of-the-art atomic force microscopes (AFMs), dedicated equipment for preparing high-quality (nanoscale flat) surfaces, and a micro-probe electrical characterization platform. With our state-of-the-art equipment we are thus able cover all length scales from nano to macro in spatially resolved measurements.

​​

We have diverse and extensive expertise in different AFM-based methods, with a special focus on techniques such as piezoresponse force microscopy (PFM), conductive atomic force microscopy (cAFM), electrostatic force microscopy (EFM), and magnetic force microscopy (MFM). We are also working to move beyond such established methods by developing new techniques including, for example, using alternating currents to measure cAFM (AC-cAFM) and 3D nanoscale imaging.

     

​​​

​​  Atom probe tomography: We are operating a newly installed, state-of-the-art atom probe tomography (APT) instrument, which is situated at the Department of Materials Science and Engineering. The great advantage of APT is that it allows for investigating the chemical composition down to the atomic scale, facilitating correlated structure and composition studies in combined APT-TEM experiments understanding functional materials atom by atom.

 

 

 

​​Focused ion beam (FIB) at NTNU NanoLab: We are located just next door to the cleanroom user-facilities of NTNU NanoLab, which host a broad range of state-of-the-art characterization instruments. Our close collaboration stems from PhD students being instrument responsible for NanoLab’s Thermo-Fisher G4UX dual beam FIB, and other local probe methods complementary to the equipment in our laboratory. The FIB provides a particularly powerful tool for our nanoscale measurements allowing us to move beyond bulk structures by tuning our samples with local boundary conditions. For this, the combination of an ion beam, an electron beam, microprobe, a heating stage and in-situ electrical microprobes (MiBots) is exceptionally powerful.

 

 

​​​TEM at NORTEM: To go beyond the lengths scales we can resolve with AFM, we work in close collaboration with specialists at the Norwegian Centre for Transmission Electron Microscopy (NORTEM) Gemini Centre at NTNU. Here, advanced TEMs allows exceptional resolution of structure and chemical composition with picometer precision.

 

 

 

​​​PEEM and LEEM: In addition to the different microscopy techniques available in-house, we regularly go on beamtime, using cathode-lense microscopes at synchrotron sources around the world, (such as Diamond Light Source, England; BESSY II, Germany; Advanced Light Source, USA). Here, we use experimental techniques such as photoemission electron microscopy (PEEM) and low-energy electron emission microscopy (LEEM) to perform, for example, local spectroscopy experiments with nanoscale spatial precision and high-resolution potential mapping.

​​​​​​

Books

Domain Walls - From Fundamental Properties to Nanotechnology Concepts. D. Meier, J. Seidel, M. Gregg and R. Ramesh, Oxford University Press, ISBN: 9780198862499 (2020).

Multiferroics - Fundamentals and Applications. A. Cano, D. Meier, M. Trassin. De Gruyter, ISBN: 3110580977 (2020).

Order parameters and domain topology in magnetically induced ferroelectrics. D. Meier, Logos Verlag, ISBN: 3832524890 (2010).

 

Patents

Device for determining small magnetic fields with at least one SQUID sensor, DE102017122028B4, Germany (2017).

Device for variable temperature adjustment in a flow cryostat, DE102020123664A1, Germany (2020).

Spin texture storage device , UK2107173.3, United Kingdom (2021).

 

Publications

 

2025

D. Meier and D. Rodriguez
A cryogenic memristor.
Nature Mater. doi.org/10.1038/s41563-025-02125-w (2025)

M. Zahn, A. M. Müller, K. P. Kelley, S. M. Neumayer, S. V. Kalinin, I. Késmarki, M. Fiebig, Th. Lottermoser, N. Domingo, D. Meier, and J. Schultheiss
Reversible long-range domain wall motion in an improper ferroelectric.
Nature Commun. 16, 1781 (2025)

D. R. Småbråten, F. H. Damno, N. H. Gaukås, S. P. Singh, N. Kanas, D. Meier, K. Wiik, M.-A. Einarsrud, and S. M. Selbach
Controlling electronic properties of hexagonal manganites through aliovalent doping and thermoatmospheric history.
Phys. Rev. Materials 9, 024408 (2025)

J. He, U. Ludacka, K. A. Hunnestad, D. R. Småbråten, K. Shapovalov, P. E. Vullum, C. Hatzoglou, D. M. Evans, E. D. Roede, Z. Yan, E. Bourret, S. M. Selbach, D. Gao, J. Akola, and D. Meier
Local doping of an oxide semiconductor by voltage-driven splitting of anti-Frenkel defects.
arXiv:2502.07947 (2025)

P. Chatterjee, M. Nord, J. He, D. Meier, and C. Brüne
Challenges and insights in growing epitaxial FeSn thin films on GaAs(111) substrate using molecular beam epitaxy.
J. Vac. Sci. Technol. A 43, 022701 (2025)

D. Kong, A. Kovács, M. Charilaou, M. Altthaler, L. Prodan, V. Tsuran, D. Meier, X. Han, I. Keszmarki, and R. E. Dunin-Borkowski
Strain engineering of magnetic anisotropy in the kagome magnet Fe3Sn2.
ACS Nano doi.org/10.1021/acsnano.4c16603 (2025)

 

2024

K. Everschor-Sitte, A. Majumdar, K. Wolk, and D. Meier
Topological magnetic and ferroelectric systems for reservoir computing.
Nature Rev. Phys. 6, 455 (2024)

K. A. Hunnestad, H. Das, C. Hatzoglou, M. Holtz, C. M. Brooks, A. T. J. van Helvoort, D. A. Muller, D. G. Schlom, J. A. Mundy, D. Meier
3D oxygen vacancy distribution and defect-property relations in an oxide heterostructure.
Nature Commun. 15, 5400 (2024)

M. Conroy, D. R. Småbråten, C. Ophus, K. Shapovalov, Q. M. Ramasse, K. A. Hunnestad, S. M. Selbach, U. Aschauer, K. Moore, J. M. Gregg, U. Bangert, M. Stengel, A. Gruverman, and D. Meier
Observation of antiferroelectric domain walls in a uniaxial hyperferroelectric.
Adv. Mater. 2405150 (2024)

J. He, M. Zahn, I. N. Ushakov, L. Richarz, U. Ludacka, E. D. Roede, Z. Yan, E. Bourret, I. Készmárki, G. Catalan, and D. Meier
Non-destructive tomographic nanoscale imaging of ferroelectric domain walls.
Adv. Funct. Mater. 34, 2314011 (2024)

K. Wolk, R. S. Dragland, E. Chavez-Panduro, L. Richarz, Z. Yan, E. Bourret, K. A. Hunnestad, Ch. Tzschaschel, J. Schultheiss, and D. Meier
Coexistence of multi-scale domains in ferroelectric polycrystals with non-uniform grain-size distribution.
Matter 7, 1-10 (2024)

U. Ludacka, J. He, S. Qin, M. Zahn, E. F. Christiansen, K. A. Hunnestad, Z. Yan, E. Bourret, I. Kézsmarki, A. T. J. van Helvoort, J. Agar, and D. Meier
Imaging and structure analysis of ferroelectric domains, domain walls, and vortices by scanning electron diffraction.
npj Comp. Mater. 10, 106 (2024)

J. McCartan, P. Turner, J. McConville, K. Holsgrove, C. Cochard, A. Kumar, R. McQuaid, D. Meier, and M. Gregg
Fundamental aspects of conduction in charged domain walls in ErMnO3.
Adv. Electron. Mater. 2400091 (2024)

L. Zhou, L. Puntigam, P. Lunkenheimer, E. Bourret, Z. Yan, I. Kézsmárki, D. Meier, S. Krohns, J. Schultheiss, and D. M. Evans
Post-synthesis tuning of dielectric constant via ferroelectric domain wall engineering.
Matter 7, 1-11 (2024)

J. Schultheiss, L. Puntigam, M. Winkler, S. Krohns, D. Meier, H. Das, D. M. Evans, I. Kézsmarkí
Magnetoelectric coupling at the domain level in polycrystalline ErMnO3.
Appl. Phys. Lett. 124, 252902 (2024)

K. Eggestad, B. A. D. Williamson, D. Meier, and S. M. Selbach
Mobile intrinsic points defects for conductive neutral domain walls in LiNbO3.
J. Mater. Chem. C 12, 17099 (2024)

D. Meier, J. Iñiguez, D. Rodrigues, and K. Everschor-Sitte
Topological solitons for neuromorphic systems.
Neuromorph. Comput. Eng. 4, 010202 (2024)

N. Sharma, K. M. Holsgrove, J. Dalzell, C. J. McCluskey, J. He, D. Meier, D. Prabhakaran, B. J. Rodriguez, R. G. P. McQuaid, J. M. Gregg, and A. Kumar
AFM-based functional tomography - to mill or not to mill, that is the question!
Adv. Mater. Interfaces 2400813 (2024)

R. Dragland, C. Salazar Mejía, I. Hansen, Y. Hamasaki, E. C. Panduro, Y. Ehara, T Gottschall, D. Meier, and J. Schultheiss
Relation between rare-earth magnetism and the magnetocaloric effect in multiferroic hexagonal manganites.
arXiv:2410.08693 (2024)

L. Richarz, I. C. Skogvoll, E. Y. Tokle, K. A. Hunnestand, U. Ludacka, J. He, E. Bourret, Z. Yan, A. T. J. van Helvoort, J. Schultheiss, M. Selbach, and D. Meier
Ferroelectric domain walls for environmental sensors.
arXiv:2412.03691 (2024)

L. He, U. Ludacka, P. Chatterjee, M. Hartl, D. Meier, and C. Brüne
Tailoring MBE growth of c-Mn3Sn directly on MgO (111): From islands to film.
arXiv:2412.15442 (2024)

 

2023

K. A. Hunnestad, J. Schultheiss, A. C. Mathisen, I. N. Ushakov, C. Hatzoglou, A. T. J. van Helvoort, and D. Meier,
Quantitative mapping of chemical defects at charged grain boundaries in a ferroelectric oxide. 
Adv. Mater. (2023)

O. W. Sandvik, A. M. Müller, H. W. Ånes, M. Zahn, J. He, M. Fiebig, Th. Lottermoser, T. Rojac, D. Meier, and J. Schultheiss, 
Pressure-control of non-ferroelastic ferroelectric domains in ErMnO3. 
Nano Letters 23, 15 (2023)

H. Lu, Y. Tan, L. Richarz, J. He, B. Wang, D. Meier, L.-Q. Chen, and A. Gruverman,
Electromechanics of domain walls in uniaxial ferroelectrics.  
Adv. Funct. Mater. 2213684 (2023)

L. Richarz, J. He, U. Ludacka, E. Bourret, Z. Yan, A. T .J. van Helvoort, and D. Meier,
Moiré fringes in conductive atomic force microscopy.
Appl. Phys. Lett. 122, 162903 (2023)

K. A. Hunnestad, C. Hatzoglou, F. Vurpillot, I.-E. Nylund, Z. Yan, E. Bourret, A. T. J. van Helvoort, and D. Meier, 
Correlating laser energy with compositional and atomic-level information of oxides in atom probe tomography. ​​​
​​​Materials Characterization 203, 113085 (2023).

C. Hatzoglou, G. Da Costa, P. Wells, X. Ren, B. P. Geiser, D. J. Larson, R. Demoulin, K. A. Hunnestad, E. Talbot, B. Mazumder, D. Meier, and F. Vurpillot,
Introducing a dynamic reconstruction methodology for multilayered structures in atom probe tomography.  
Microscopy and Microanalysis, ozad054 (2023)

K. A. Hunnestad, H. Das, C. Hatzoglou, M. Holtz, C. M. Brooks, A. T. J. van Helvoort, D. A. Muller, D. G. Schlom, J. A. Mundy, D. Meier
3D oxygen vacancy order and defect-property relations in multiferroic (LuFeO3)9/(LuFe2O4)1 superlattices.
arXiv:2307.00139 (2023)

U. Ludacka, J. He, S. Qin, M. Zahn, E. F. Christiansen, K. A. Hunnestad, Z. Yan, E. Bourret, I. Kézsmarki, A. T. J. van Helvoort, J. Agar, and D. Meier
Imaging and structure analysis of ferroelectric domains, domain walls, and vortices by scanning electron diffraction.
arXiv:2305.05727 (2023)

M. Conroy, D. R. Småbråten, C. Ophus,  K. Shapovalov, Q. M. Ramasse, K. A. Hunnestad, S. M. Selbach, U. Aschauer, K. Moore, J. M. Gregg, U. Bangert, M. Stengel, A. Gruverman, and D. Meier
Observation of antiferroelectric domain walls in a uniaxial hyperferroelectric.
arXiv:2309.02068 (2023).

 

2022

D. Meier and S.M. Selbach
Ferroelectric domain walls for nanotechnology
Nat. Rev. Mater. 7 (2022) 15

K. A. Hunnestad, C. Hatzoglou, Z. M. Khalid, P. E. Vullum, Z. Yan, E. Bourret, A. T. J. van Helvoort, S. M. Selbach and D. Meier
Atomic-scale 3D imaging of individual dopant atoms in an oxide semiconductor
Nat. Commun. 13 (2022) 4783

J. Schultheiß,F. Xue,E. Roede,H. W. Ånes,F. H. Danmo,S. M. Selbach,L.-Q. Chen and D. Meier
Confinement-driven inverse domain scaling in polycrystalline ErMnO₃
Adv. Mater. (2022)

E. D. Roede, K. Shapovalov, T. J. Moran, A. B. Mosberg, Z. Yan, E. Bourret, A. Cano, B. D. Huey, A. T. J. van Helvoort and D. Meier
The third dimension of ferroelectric domain walls
Adv. Mater. 34 (2022) 2202614

Y. Tikhonov, J. R. Maguire, C. J. McCluskey, J. P. V. MCConville, A. Kumar, D. Meier, A. Razumnaya, J. M. Gregg, A. Gruverman, V. M. Vinokur and I. Luk'yanchuk
Topological polarization networking in uniaxial ferroelectrics
Adv. Mater. (2022) 2203028

M. Stepanova, J: Masell, E. Lysne, P. Schoenherr, L. Köhler, A. Qaiumzadeh, N. Kanazawa, A. Rosch, Y. Tokura, A. Brataas, M. Garst and D. Meier
Detection of topological spin textures via non-linear magnetic interactions
Nano Lett. 22 (2021) 14

J. Schultheiss, T. Rojac and D. Meier
Unveiling AC electronic properties at ferroelectric domain walls
Adv. Electron. Mater. 8 (2022) 2100996

E. Gradauskaite, K. A: Hunnestad, Q. N. Meier, D. Meier and M. Trassin
Ferroelectric domain engineering using structural defect ordering
Chem. Mater. 34 (2022) 6468

I.-E. Nylund, M. Tsoutsouva, T. Grande and D. Meier
Observation of cation-specific critical behavior at the improper ferroelectric phase transition in Gd₂(MoO₄)₃
Phys. Rev. Mater. 6 (2022) 034402

C. Fernandez-Poseda, Ch. Haines, D. M. Evans, Z. Yan, E. Bourret, D. Meier and M. Carpenter
Magnetoelastic properties of multiferroic hexagonal ErMnO₃
Magn. Magn. Mater. (2022) 169277

M. Pauksen, J. Lindner, B. Klemke, J. Beyer, M. Fechner, D. Meier, and K. Kiefer
An ultra-low field SQUID magnetometer for measuring antiferromagnetic and weakly remanent magnetic materials at low temperatures.
arXiv:2211.12894 (2022)

 

2021

P. Schoenherr, M. Stepanova, E. N. Lysne, N. Kanazawa, Y. Tokura, A. Bergman and D. Meier
Dislocation-Driven Relaxation Processes at the Conical to Helical Phase Transition in FeGe
ACS Nano 15 (2021) 1708

J. Schultheiß, E. Lysne, L. Puntigam, J. Schaab, E. Bourret, Z. Yan, S. Krohns and D. Meier
Charged ferroelectric domain walls for deterministic a.c. signal control
Nano Lett 21 (2021) 9560

D. M. Evans, D. R. Småbråten, T. S. Holstad, P. E. Vullum, A. B. Mosberg, Z. Yan,  E. Bourret, A. T. J. Van Helvoort, S. M. Selbach and D. Meier
Observation of electric-field induced structural dislocations in a ferroelectric oxide
Nano Lett. 8 (2021) 3386

C. Zhao, S. Gao, T. Yang, M. Scherer, J. Schultheiß, D. Meier, X. Tan, H.-J. Kleebe, L.-Q. Chen, J. Koruza and J. Rödel
Precipitation Hardening in Ferroelectric Ceramics
Adv. Mater. (2021) 2102421

D. Meier, N. Valanoor, Q. Zhang and D. Lee
Domains and domain walls in ferroic materials
J. Appl. Phys. 129 (2021) 230401

M. Altthaler, E. Lysne, E. Roede, L. Prodan, V. Tsurkan, M. A. Kassem, S.Krohns, I. Kézsmárki and D. Meier
Magnetic and geometrical control of spin textures in the itinerant kagome magnet Fe₃Sn₂
Phys. Rev. Res. 3 (2021) 043191

E. D. Roede, A. B. Mosberg, D. M. Evans, E. Bourret, Z. Yan, A. T. J. von Helvoort and D. Meier
Contact-free reversible switching of improper ferroelectric domains by electron and ion irradiation
APL Mater. 9 (2021) 021105

M. E. Holtz, E. S. Padgett, R. Steinhardt, C. M. Brooks, D. Meier, D. G. Schlom, D. A. Muller and J. A. Mundy
Dimensionality-induced change in topological order in multiferroic oxide superlattices
Phys. Rev. Lett. 126 (2021) 157601

T. M. Raeder, T. S. Holstad, I.-E. Nylund, M.-A. Einarsrud, J. Glaum, D. Meier and T. Grande
Anisotropic in-plane dielectric and ferroelectric properties of tensile-strained BaTiO₃ films with three different crystallographic orientations
AIP Adv. 11 (2021) 025016 Editor's Pick

L. Puntigam, J. Schultheiß and A. Strinic, Z. Yan, E. Bourret, M. Altthaler, I. Kézsmárki, D. M. Evans, D. Meier and S. Krohns
Insulating improper ferroelectric domain walls as robust barrier layer capacitors
J. Appl. Phys. 129 (2021) 074101 Featured Article

A. T. J. van Helvoort, A. Mosberg, U. Ludacka, T. S. Holstad, D. M. Evans and D. Meier
STEM-based analysis of functional defects in ferroelectric ErMnOzsub>3
Microscopy and Microanalysis, 27 (2021) 1188

M. A. Carpenter, D. Pesquera, D. O'Flynn, G. Balakrishnan, N. Mufti, A. A. Nugroho, T. Palstra, M. Mihalik Jr., M. Mihalik, M. Zentkova, A. Almeida, J. A. A: Moreira, R. Vilarinho and D. Meier
Strain relaxation dynamics of multiferroic orthorhombic manganites
J. Phys.: Condens. Matter 33 (2021) 125402

J. Schultheiß, L. Porz, L. K. Venkataraman, M. Höfling, C. Yildirim, P. Cook, C. Detlefs, S. Gorfman, J. Rödel and H. Simons
Quantitative mapping of nanotwin variants in the bulk
Scr. Mater. 199 (2021) 113878

 

2020

D. R. Småbråten, A. Nakata, D. Meier, T. Miyazaki and S. M. Selbach
First-principles study of topologically protected vortices and ferroelectric domain walls in hexagonal YGaO₃
Phys. Rev. B 102 (2020) 144103.

E. Evans, Ch. Cochard, R. McQuaid, A. Cano, M. Gregg and D. Meier, in Meier, Seidel, Gregg, Ramesh (eds.)
Improper ferroelectric domain walls
Domain walls, Oxford, Oxford University Press (2020) p. 129-151.

T. S. Holstad, T. R. Ræder, D. M. Evans, D. R. Småbråten, S. Krohns, J. Schaab, Z. Yan, E. Bourret, A. T. J. van Helvoort, T. Grande, S. M. Selbach, J. C. Agar and D. Meier
Application of a long short-term memory for deconvoluting conductance contributions at charged ferroelectric domain walls
npj Comput. Mater. 6 (2020) 163.

M. A. Carpenter, D. Pesquera, D. O'Flynn, G. Balakrishnan, N. Mufti, A. A. Nugroho, T. Palstra, M. Mihalik, M. Mihalik, M. Zentkova, A. Almeida, J. A. A: Moreira, R. Vilarinho and D. Meier
Strain relaxation dynamics of multiferroic orthorhombic manganites
J. Phys.: Condens. Matter (2020).

G. F. Nataf, M. Guennou, J. M. Gregg, D. Meier, J. Hlinka, E. K. H. Salje and J. Kreisel
Domain-wall engineering and topological defects in ferroelectric and ferroelastic materials
Nature Rev. Phys. (2020).

D. M. Evans, T. S. Holstad, A. B. Mosberg, D. R. Småbråten, P. E. Vullum, A. L. Dadlani, K. Shapovalov, Z. Yan, E. Bourret, D. Gao, J. Akola, J. Torgersen, A. T. J. van Helvoort, S. M. Selbach and D. Meier
Conductivity control via minimally invasive anti-Frenkel defects in a functional oxide
Nature Materials (2020).

D. R. Småbråten, T. S. Holstad, D. M. Evans, Z. Yan, E. Bourret, D. Meier and S. M. Selbach
Domain wall mobility and roughening in doped ferroelectric hexagonal manganites
Phys. Rev. Research 2 (2020) 033159.

J. Schultheiß, J. Schaab, D. R. Småbråten, S. H. Skjærvø, E. Bourret, Z. Yan, S. M. Selbach and D. Meier
Intrinsic and extrinsic conduction contributions at nominally neutral domain walls in hexagonal manganites
Appl. Phys. Lett. 116 (2020) 262903.

O. Bak, T. S. Holstad, Y. Tan, H. Lu, D. M. Evans, K. A. Hunnestad, B. Wang, J. P. V. McConville, P. Becker, L. Bohatý, I. Lukyanchuk, V. M. Vinokur, A. T. J. van Helvoort, J. M. Gregg, L.-Q. Chen, D. Meier and A. Gruverman
Observation of Unconventional Dynamics of Domain Walls in Uniaxial Ferroelectric Lead Germanate
Adv. Funct. Mater. (2020).

D. M. Evans, V. Garcia, D. Meier and M. Bibes
Domains and domain walls in multiferroics
Phys. Sci. Rev. (2020).

D. M. Evans, D. R. Småbråten, T. S. Holstad, P. E. Vullum, A. B. Mosberg, Z. Yan, E. Bourret, A. T. J. Van Helvoort, S. M. Selbach and D. Meier
Controlling local resistance via electric-field induced dislocations
arXiv:2006.15252 [cond-mat.mtrl-sci] (2020).

T. Lottermoser and D. Meier
A short history of multiferroics
Phys. Sci. Rev. psr-2020-0032 (2020).

L. Kuerten, S. Krohns, P. Schoenherr, K. Holeczek, E. Pomjakushina, Th. Lottermoser, M. Trassin, D. Meier and M. Fiebig
Local control of improper ferroelectric domains in YMnO₃
Phys. Rev. B 102 (2020) 094108

 

2019

J. Schaab, K. Shapovalov, P. Schoenherr, J. Hackl, I. Khan, M. Hentschel, Z. Yan, E. Bourret, C. M. Schneider, S. Nemsák, M. Stengel, A. Cano, and D. Meier
Electrostatic potential mapping at ferroelectric domain walls by low-temperature photoemission electron microscopy
Appl. Phys. Lett. 115 (2019) 122903.

A. B. Mosberg, E. D. Roede, D. M. Evan, T. S. Holstad, E. Bourret, Z. Yan, A. T. J. van Helvoort, and D. Meier
FIB lift-out of conducting ferroelectric domain walls in hexagonal manganites
Appl. Phys. Lett. 115 (2019) 122901.

A. Gruverman, M. Alexe, and D. Meier
Piezoresponse force microscopy and nanoferroic phenomenas
Nature Commun. 10 (2019) 1661.

P. Schoenherr, K. Shapovalov, J. Schaab, Z. Yan, E. D. Bourret, . Hentschel, M. Stengel, M. Fiebig, A. Cano and D. Meier
Observation of uncompensated bound charges at improper ferroelectric domain walls
Nano Lett. (2019).

 

2018

J. Schaab, S. H. Skjærvø, S. Krohns, X. Dai, M. E. Holtz, A. Cano, M. Lilienblum, Z. Yan, E. Bourret, D. A. Muller, M. Fiebig, S. M. Selbach and D. Meier
Electrical half-wave rectification at ferroelectric domain walls
Nature Nanotechnol. (2018)

N. Leo, V. Carolus, J. S. White, M. Kenzelmann, M. Hudl, P. Tolédano, T. Honda, T. Kimura, S. A. Ivanov, M. Weil, Th. Lottermoser, D. Meier and M. Fiebig
Magnetoelectric inversion of domain patterns
Nature 560 (2018) 466–470.

P. Schoenherr, J. Müller, L. Köhler, A. Rosch, N. Kanazawa, Y. Tokura, M. Garst and D. Meier
Topological domain walls in helimagnets
Nature Phys. 10 (2018).

T. S. Holstad, D. M. Evans, A. Ruff, D. R. Småbråten, J. Schaab, Ch. Tzschaschel, Z. Yan, E. Bourret, S. M. Selbach, S. Krohns and D. Meier
Electronic bulk and domain wall properties in B-site doped hexagonal ErMnO₃
Phys. Rev. B 97 (2018) 085143.

J. Schaab, S. H. Skjærvø, S. Krohns, X. Dai, M. Holtz, A. Cano, M. Lilienblum, Z. Yan, E. Bourret, D. A. Muller, M. Fiebig, S. M. Selbach and D. Meier
Electrical half-wave rectification at ferroelectric domain walls
arXiv:1803.08253 (2018).

A. Ruff, Z. Li, A. Loidl, J. Schaab, M. Fiebig, A. Cano, Z. Yan, E. Bourret, J. Glaum, D. Meier and S. Krohns
Frequency dependent polarisation switching in h-ErMnO₃
arXiv:1802.09247 (2018).

 

2017

P. Schoenherr, L. M. Giraldo, M. Lilienblum, M. Trassin, D. Meier and M. Fiebig
Magnetoelectric force microscopy on antiferromagnetic 180 degree domains in Cr₂O₃
Materials 10 (2017) 1051.

M. E. Holtz, K. Shapovalov, J. A. Mundy, C. S. Chang, Z. Yan, E. Bourret, D. A. Muller, D. Meier and A. Cano
Topological defects in hexagonal manganites - Inner structure and emergent electrostatics
Nano Lett. 17 (2017) 5883-5890.

D. Meier
Walls with special functionality
Phys. J. 9 (2017) 55.

M. E. Holtz, K. Shapovalov, J. A. Mundy, C. S. Chang, D. Meier, A. Cano and D. A. Muller
Measuring Ferroelectric Order Parameters at Domain Walls and Vortices in Hexagonal Manganites with Atomic Resolution STEM
Microsc. Microanal. 23 (2017), 1636-1637.

J. A. Mundy, J. Schaab, Y. Kumagai, A. Cano, M. Stengel, I. P. Krug, D. M. Gottlob, H. Doğanay, M. E. Holtz, R. Held, Z. Yan, E. Bourret, C. M. Schneider, D. G. Schlom, D. A. Muller, R. Ramesh, N. A. Spaldin and D. Meier
Functional electronic inversion layers at ferroelectric domain walls
Nature Mater. 16 (2017) 622-627.

E. Ruff, S. Krohns, M. Lilienblum, D. Meier, M. Fiebig,  P. Lunkenheimer and A. Loidl
Conductivity Contrast and Tunneling Charge Transport in the Vortexlike Ferroelectric Domain Patterns of Multiferroic Hexagonal YMnO3
Phys. Rev. Lett. 118 (2017) 036803.

Q. N. Meier, M. Lilienblum, S. M. Griffin, K. Conder, E. Pomjakushina, Z. Yan, E. Bourret, D. Meier, F. Lichtenberg, E. K. H. Salje, N. A. Spaldin, M. Fiebig  and A. Cano
Global Formation of Topological Defects in the Multiferroic Hexagonal Manganites
Phys. Rev. X 7, (2017) 041014.

 

2016

S. Manz, M. Matsubara, T. Lottermoser, J. Büchi, A. Iyama, T. Kimura, D. Meier and M. Fiebig
Reversible optical switching of antiferromagnetism in TbMnO3
Nature Photon. 10 (2016) 653-656.

A. Dussaux, P. Schoenherr, K. Koumpouras, J. Chico, K. Chang, L. Lorenzelli, N. Kanazawa, Y. Tokura, M. Garst, A. Bergman, C. L. Degen and D. Meier
Local dynamics of topological magnetic defects in the itinerant helimagnet FeGe
Nature Commun. 7 (2016) 12430.

J. Schaab, I. P. Krug, H. Dogonay, J. Hackl, D. M. Gottlob, M. I. Khan, S. Nemsak, L. Maurel, E. Langenberg, P. A. Algarabel, J. A. Pardo, C. M. Schneider and D. Meier.
Electronic transport and contact-free conductance mapping of polar domains in SrMnO3 films

Phys. Rev. Applied 5 (2016) 054009.

M. Fiebig, T. Lottermoser, D. Meier and M. Trassin
The evolution of multiferroics
Nature Rev. Mater. 1 (2016) 16046.

J. Schaab, A. Cano, M. Lilienblum, Z. Yan, E. Bourret, R. Ramesh, M. Fiebig and D. Meier
Optimization of Electronic Domain‐Wall Properties by Aliovalent Cation Substitution
Mater. 2 (2016) 1500195.

J. Schaab, A. Cano, M. Lilienblum, Z. Yan, E. Bourret, R. Ramesh, M. Fiebig and D. Meier
Robustness of magnetic and electric domains against charge carrier doping in multiferroic hexagonal EuMnO₃
New. J. Phys. 18 (2016) 43015.

M. E. Holtz, J. A. Mundy, C. S. Chang, J. A. Moyer, C. M. Brooks, H. Das, A. F. Rebola, R. Hovden, E. Padgett, C. J. Fennie, P. Schiffer, D. Meier, D. G. Schlom and D. A Muller
Imaging local polarization and domain boundaries with picometer-precision scanning transmission electron microscopy
Microsc. Microanal. 22 (2016) 898.

J. Schaab, I. P. Krug, H. Doganay, J. Hackl, D. M. Gottlob, M. I. Khan, S. Nemsak, L. Maurel, E. Langenberg, P. A. Algarabel, J. A. Pardo, C. M. Schneider and D. Meier
Contact-free mapping of electronic transport phenomena of polar domains in SrMnO₃ thin films
Phys. Rev. Appl. 5 (2016) 054009.

 

2015

D. Meier
Functional domain walls in multiferroics
J. Phys. Condens. Matter 27, (2015) 463003.

N. Leo, D. Meier, P. Becker, L- Bohatý, and M. Fiebig
Magnetically activated phase matching in MnWO₄
Optics Expr. 23, (2015) 27700.

M. Matsubara, S. Manz, M. Mochizuki, T. Kubacka, A. Iyama, N. Aliouane, T. Kimura, S. L. Johnson, D. Meier, and M. Fiebig
Magnetoelectric domain control in multiferroic TbMnO₃
Science 348, (2015) 1112.

C. Becher, L. Maurel, U. Aschauer, M. Lilienblum, C. Magén, D. Meier, E. Langenberg, M. Trassin, J. Blasco, I. P. Krug, P. A. Algarabel, N. A. Spaldin, J. A. Pardo, and M. Fiebig
Strain-induced coupling of electrical polarization and structural defects in SrMnO₃ films
Nature Nano. 10, (2015) 661.

N. Leo, A. Bergman, A. Cano, N. Poudel, B. Lorenz, M. Fiebig, and D. Meier
Polarization control at spin-driven ferroelectric domain walls
Nature Commun. 6, (2015) 6661.

J. Schaab, M. Trassin, A. Scholl, A. Doran, Z. Yan, E. Bourret, R. Ramesh, and D. Meier
Ferroelectric domains in the multiferroic phase of EuMnO₃ imaged by low-temperature photoemission electron microscopy
J. Phys. Conf. Ser. 592, (2015) 012120.

Z. Yan, D. Meier, J. Schaab, R. Ramesh, E. Samulon, and E. Bourret
Growth of High-quality hexagonal EuMnO₃ single-crystals by the pressurized floating-zone method
J. Cryst. Growth 409, (2015) 75.

 

2014

C. Becher, M. Trassin, M. Lilienblum, C. T. Nelson, S. J. Suresha, D. Yi, P. Yu, R. Ramesh, M. Fiebig, and D. Meier
Functional Ferroic Heterostructures with Tunable Integral Symmetry
Nature Commun. 5, (2014) 4295.

J. Schaab, I. P. Krug, F. Nickel, D. M. Gottlob, H. Doğanay, A. Cano, M. Hentschel, Z. Yan, E. Bourret, C. M. Schneider, R. Ramesh, and D. Meier
Imaging and characterization of conducting ferroelectric domain walls by photoemission electron microscopy
Appl. Phys. Lett. 104, (2014) 232904.

A. S. Zimmermann, D. Meier, M. Fiebig
Ferroic nature of magnetic toroidal order
Nature Commun. 5, (2014) 4796.

J. D. Reim, E. Roseacuten, W. Schweika, M. Meven, N. R. Leo, D. Meier, M. Fiebig, M. Schmidt, C.-Y. Kuo, T.-W. Pi, Z. Hu and M. Valldor
Structural invariance upon antiferromagnetic ordering in geometrically frustrated Swedenborgite CaBaCo₂Fe₂O₇
J. Appl. Cryst. 47, (2014) 2038.

 

Before 2014

D. Meier, M. Lilienblum, P. Becker, L. Bohatý, N. A. Spaldin, R. Ramesh, and M. Fiebig
Translation domains in multiferroics
Phase Transit. 86, (2013) 33.

J. Koralek and D. Meier (joint first authorship), J. P. Hinton, A. Bauer, S. A. Parameswaran, A. Vishwanath, R. Ramesh, R. W. Schoenlein, Ch. Pfleiderer, and J. Orenstein
Observation of coherent helimagnons and Gilbert damping in an itinerant helimagnet
Phys. Rev. Lett. 109, (2012) 247204.

D. Meier, H. Ryll, K. Kiefer, J.-U. Hoffmann, R. Ramesh, and M. Fiebig
Mutual induction of magnetic 3d and 4f order in multiferroic hexagonal ErMnO₃
Phys. Rev. B 86, (2012) 184415.

D. Meier, J. Seidel, A. Cano, K. Delaney, Y. Kumagai, M. Mostovoy, N. A. Spaldin, R. Ramesh, and M. Fiebig
Anisotropic conductance at improper ferroelectric domain walls
Nature Mater. 11, (2012) 284.

N. Leo, D. Meier, R. V. Pisarev, N. Lee, S.-W. Cheong, and M. Fiebig
Independent ferroelectric contributions and rare-earth induced polarization reversal in multiferroic TbMn₂O₅
Phys. Rev. B 85, (2012) 094408.

A. C. Komarek, M. Isobe, J. Hemberger, D. Meier, T. Lorenz, D. Trots, A. Cervellino, M. T. Fernández-Diáz, Y. Ueda, and M. Braden
Dimerization and charge order in Hollandite K2V8O16
Phys. Rev. Lett. 107, (2011) 027201.

P. Tolédano, N. Leo, D. D. Khalyavin, L. C. Chapon, T. Hoffmann, D. Meier, and M. Fiebig
Theory of high-temperature multiferroicity in cupric oxide
Phys. Rev. Lett. 106, (2011) 257601.

D. Meier, N. Leo, G. Yuan, Th. Lottermoser, P. Becker, L. Bohatý, and M. Fiebig
Second harmonic generation on incommensurate structures: The case of MnWO₄
Phys. Rev. B 82, (2010) 155112.

C. Wehrenfennig, D. Meier, Th. Lottermoser, Th. Lonkai, J.-U. Hoffmann, N. Aliuoane, D. N. Argyriou, and M. Fiebig
Incompatible magnetic order in multiferroic hexagonal DyMnO₃
Phys. Rev. B 82, (2010) 100414R.

D. Meier, N. Leo, Th. Lottermoser, P. Becker, L. Bohatý, and M. Fiebig
Imaging of hybrid-multiferroic and translation domains in a spin-spiral ferroelectric
Proceedings of the MRS Fall Meeting 2009, (2010) 1199E-F02-07.

D. Meier, N. Leo, M. Maringer, Th. Lottermoser, P. Becker, L. Bohatý, and M. Fiebig
Topology and manipulation of multiferroic domains in MnWO₄
Phys. Rev. B 80, (2009) 224420.

Th. Lottermoser, D. Meier, R. V. Pisarev, and M. Fiebig
Giant coupling of second-harmonic generation to a multiferroic polarization
Phys. Rev. B 80, (2009) 100101(R).

T. Kordel, C. Wehrenfennig, D. Meier, Th. Lottermoser, and M. Fiebig, I. Gélard, C. Dubourdieu, J.-W. Kim, L. Schultz, and K. Dörr
Nanodomains in multiferroic hexagonal RMnO₃ films (R = Y, Dy, Ho, Er)
Phys. Rev. B 80, (2009) 045409.

D. Meier, M. Maringer, Th. Lottermoser, P. Becker, L. Bohatý, and M. Fiebig
Observation and coupling of domains in a spin-spiral multiferroic
Phys. Rev. Lett. 102, (2009) 107202.

K. Berggold, J. Baier, D. Meier, J. A. Mydosh, T. Lorenz, J. Hemberger, A. Balbashov, N. Aliouane, and D. N. Argyriou
Anomalous thermal expansion and strong damping of the thermal conductivity of NdMnO₃ and TbMnO₃ due to 4f crystal-field excitations
Phys. Rev. B 76, (2007) 094418.

D. Meier, N. Aliouane, D. N. Argyriou, J. A. Mydosh, and T. Lorenz
New features in the phase diagram of TbMnO₃
New J. Phys. 9, (2007) 100.

J. Baier, D. Meier, K. Berggold, J. Hemberger, A. Balbashov, J. A. Mydosh, and T. Lorenz
Uniaxial pressure dependencies of the phase transitions in GdMnO₃
J. Magn. Magn. Mat. 310, (2007) 1165.

J. Baier, D. Meier, K. Berggold, J. Hemberger, A. Balbashov, J. A. Mydosh, and T. Lorenz
Hysteresis effects in the phase diagram of multiferroic GdMnO₃
Phys. Rev. B 73, (2006) 100402(R).

O. Volkova, Y. Arango, N. Tristan, V. Kataev, E. Gudilin, D. Meier, T. Lorenz, B. Büchner, and A. Vasiliev
Nature of low temperature phase transitions in CaMn₇O₁₂
JETP Lett. 82, (2005) 444.

Research Highlights

November 2024: Congratulations to Leonie Richarz for a brilliant trial lecture and thesis defense on the 28th of November 2024! We are proud of your achievement and wish you all the best for the future!

March 2024: Congratulations to Jiali He for an outstanding thesis defense on the 11th of March 2024! We are very happy that you have decided to continue working with us as a Postdoc. 

November 2023: Congratulations to Ivan Ushakov for winning best talk at the Norwegian NanoSymposium 29. November 2023!

 

November 2023: Congratulations to Kasper Aas Hunnestad for successfully defending his PhD thesis on the 23rd of November 2023! You did an outstanding job, and we wish you all the best in your new Postdoc position.

 

September 2023: Congratulations to Ivan Ushakov for winning the best poster award at the International School of Oxide Electronics in Cargèse, France.

 

June 2023: Congratulations to Leonie Richarz for winning the best talk award at the TNNN conference in Vestfold in June.

 

April 2023: Congratulations to Jiali He and Valentin Hevelke (Helmholtz-Zentrum Berlin) for winning the best poster award at the Ferroelectrics Workshop in Tromsø, April.

 

April 2023: The contribution The World of Polycrystalline Erbium Manganite by Jan Schultheiß and Dennis Meier was selected as finalist and will be presented during the 2023 Spring Meeting in San Francisco.

 

December 2022: Jiali He presenting at the 1st TNNN Conference

 

September 2022: Dennis Meier was elected as Vice-President of the European Magnetism Association (EMA)

 

June 2022: We congratulate Jiali He and Kasper Aas Hunnestad who both received a prize each for best poster, elected by the the organizing committee and Ferroschool participants respectively.

 

August 2022: Jan Schultheiß received the 2022 Electroceramics Young Researcher Award (EYRA) for his contributions to the study of ferroelectric domains and domain-walls, which he carried out at FACET.

 

January 2022: Professor Dennis Meier received the NV Faculty Day award for Outstanding Research during this years NV Faculty Day.

 

Dennis Meier at the Department of Materials Science and Engineering is an exceptional researcher who, despite his young age, has established himself internationally as one of the leading researchers in his field of research. He has great international visibility and is recognized for his world-leading research results. In his international work, he helps define the direction of future research in the field.

 

June 2021: Erik Roede won the 2021 NanoLab Image Contest with this SEM image of a FIB-cut ferromagnetic lamella on electrical contacts, overlaid with the magnetic domain structure from MFM

 

April 2021: Jan Schultheiß received the second place at the poster competition of the 96th Annual Meeting of the German Ceramic Society (DKG) for his contribution "Electronic transport at ferroelectric domain walls under alternating voltages".

 

February 2021: Jan Schultheiß's data made it onto the cover of Journal of Applied Physics (Issue 7, Volume 129).

 

August 2020: Jan Schultheiß received the JECS Trust Poster Award for his work on "Conductivity Mapping at Charged Domain Walls in ErMnO₃ under Alternating Voltages" at the virtual Electroceramics XVII conference.

 

December 2019: Professor Dennis Meier received an ERC Consolidator Grant for the project ATRONICS - Creating building blocks for atomic-scale electronics.

 

October 2019:  PhD Candidate Erik Roede won the prize for best oral presentation at this years NTNU Nano Symposium. 

 

July 2019:  We congratulate Frida Paulsen Danmo and Erik Roede from the FACET team for their outstanding performance at the poster competition at the joint ISAF-ICE-EMF-EWPM-PFM meeting in Lausanne.

June 2019:  Professor Dennis Meier was selected for the outstanding academic fellow programme.

May 2019: Professor Dennis Meier received the “Fridtjof Nansens belønning for yngre forskere” (award for young scientists) for 2019 from Det Norske Videnskaps-Akademi (Norwegian Academy of Science and Letters). 

March 2019:Professor Dennis Meier received the I.K. Lykke prize for exceptional young researchers within the field of sciences from the Royal Norwegian Society of Sciences and Letters (Det Kongelige Norske Videnskabers Selskab, DKNVS).

Professor Dennis Meier and Professor Sverre Selbach were awarded a Gordon and Betty Moore Foundation Visitor award from the American Physical Society. 

Professor Dennis Meier won the FriPro young research grant TopoSpin (RCN).

August 2017: Professor Dennis Meier won the Peder Sather Grant.

 

May 2017: Gustav-Herz-Preis: Professor Dennis Meier was awarded the highly prestigious prize for 2017.

November 2017: Donald Evans selected for the postdoctoral research development program.

2025

February 2025

fantastic day at Vassfjellet! We had a great time cruising down the well-groomed slopes and enjoying the good food. Unfortunately, several team members were sick and couldn't join us this time. Looking forward to the next adventure together!

2024

December 2024

Snow-covered streets, food from the Christmas market to keep us warm, and for some of us - a winter swim in the fjord wasn't off the table either.

Great to have Minh Duc Tran here with us for scientific exchange as part of our TOPOCOM project! You are always welcome here to do experiments or go for a swim.

Christmas dinner 2024 (November 26th)

Celebrating a really enjoyable and exciting scientific year together with nice people and good food :)

November 2024 

A relaxed city walk with the team, followed by coffee and cake.

September 30th, 2024

Lecture by the Onsager professor

Big congratulations to Prof. Dr. Alexei Gruverman for giving an excellent lecture as part of his Onsager professorship and for receiving the Onsager medal!

 

 

September 27th, 2024

Really nice hike with the team, enjoying the autumn colors before the first snow. A few brave souls took a swim in the lake. 

 

September 6th, 2024

Our group's "Science Chat", this Friday with Alexei Gruverman, digging into the fundamentals of scanning probe microscopy + hiking along Nidelven, coffee and cakes in Solsiden.

 

 

May 2024

Stand-Up Paddleboarding trip along Nidelven
Good weather, nice food, and the only thing more challenging than a complex experiment is "don’t fall in the water"!

February 2024

Our annual ski trip, blessed with sunshine and nicely prepared slopes.

2023

December 2023

Christmas cabin trip to the NTNU cabin in Kongsvoll. 
Nice meals, board games, hiking both day and night.
Last but not least: Acro-yoga!

October 2023

Lunch followed by a very alternative physical activity: Bubble football. 
Very fun, but will not become a tradition.  

August 2023

Farewell party with frisbee tournament for Gustau Catalan. It was really great to have you in our team and we will miss having you around on a daily basis – the sabbatical passed way too fast!!!

 

June 2023

Climbing and BBQ with the group and guests at Høyt og Lavt in Trondheim.

 

April 2023

Farewell dinner for Ursula. We are looking forward to future joint projects and wish you all the best – enjoy your new position in the TEM Gemini Centre.

Workshop on "Ferroelectrics - Domains and Domain Walls" with many exciting scientific talks and discussions, travelling on a Hurtigruten ship from Tromsø across the arctic circle to Trondheim.

March 2023

DPG Spring Meeting of the Condensed Matter Section in Dresden with Dennis' plenary talk on "Ferroelectric and multiferroic domain walls for nanotechnology" and several talks about the lastest results from our team.

iSCREAM seminar of the FACET group at Skistua in Trondheim with talks from students and lots of fun in the snow.

Practising talks for the DPG followed by coffee in Bakklandet

February 2023

Social Walk through Trondheim with Bathing in the Fjord

January 2023

Skiing at Vassfjellet

The best start to 2023 - Happy New Year!

​​​​​​​

2022

Christmas Dinner 2022

Thanks for a successful and enjoyable year 2022!

​​​​​​​

Climbing at Grip Klatring Sluppen 2022

Bouldering with our personal "flexoelectric" trainer/guest professor: Gustau Catalan

​​​​​​​

Walk Through Trondheim 2022

Last few sunny days before the snow? Some team members really have no issues with cold fjords...

​​​​​​​

Paint 'n' Sip 2022

This activity truly revealed some hidden talents...!

​​​​​​​

DPG Meeting in Regensburg 2022

Good conference talks, drinks, and food!

​​​​​​​

IEEE Summer School in Lyon, France 2022

Enjoying the sunshine and good company while learning about ferroelectrics

​​​​​​​

MRS Spring Meeting Hawaii 2022

​

Skiing at VassFjellet 2022

​

​

2021

Kayaking down the Nidelva 2021

​

Socially (Distanced) Walks 2021

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Alumni

 

Leonie Richardz PhD Candidate (2021-2024)
Payel Chattergee PhD Candidate (2020-2024)	Longfei He  PhD Candidate (2019-2024)	Egil Ytterli Tokle Master's Student (2024)
Kasper Aas Hunnestad PhD Candidate (2019-2023)	Erik Dobloug Roede PhD Candidate (2018-2022)	Max Haas Masters Student (2022)
Olav Wadseth Sandvik Masters Student (2022)	Dr. Ursula Ludacka PostDoc (2020-2023)	Dr. Mariia Stepanova PostDoc (2019-2021)
Dr. Erik Lysne PhD Candidate (2017-2021)	Dr. Donald Evans PostDoc (2017-2020)	Dr. Theodor Secanell Holstad; PhD Candidate (2016-2020)

Guests

Manfred Fiebig (January 2025)

Full Professor at the Department of Materials at ETH Zurich, Switzerland.

Alexei Gruverman (August 2024)

Charles J. Mach Professor of Physics, Department of Physics and Astronomy, University of Nebraska-Lincoln, USA. 

Professor Gruverman was awarded the 2024 Lars Onsager professorship and we are enthusiastic to host him for extended research visits in 2024 and 2025.
 

Hiroki Taniguchi (2024)

Department of Physics, Nagoya University, Japan.

Manfred Fiebig (2024)

Eidgenössische Technische Hochschule (ETH) Zürich, Switzerland

 

Miryam Arredondo-Arechavala (2023)

Queen’s University Belfast, UK

Brahim Dkhil (March, 2023)
Centrale Supélec, Université Paris-Saclay, France

Manfred Fiebig (2023)

Eidgenössische Technische Hochschule (ETH) Zürich, Switzerland

Xiaoqing Pan (2022)

University of California (UC) Irvine, USA

Manuel Bibes (2022)

Unité Mixte de Physique Centre national de la recherche scientifique (CNRS) / Thales, France

Stephan Krohns (2022)

University of Augsburg, Germany

Amit Kumar (2022)

Queen’s University Belfast, UK

 

Donald McLaren (2022)

University of Glasgow, UK

Gustau Catalán (2022)

Catalan Institute of Nanoscience and Nanotechnology (ICN2), Spain

Alexei Gruverman (2019)

University of Nebraska-Lincoln, USA

Alexei Gruverman (2018)

University of Nebraska-Lincoln, USA

Manfred Fiebig (2018)

Eidgenössische Technische Hochschule (ETH) Zürich, Switzerland

Lane Martin (2019)

University of California (UC) Berkeley, USA