Christoph Brüne
+4773413246
Realfagbygget, E5-112, Gløshaugen, Høgskoleringen 5, NO-7491 Trondheim Norway
About
Research
My research at NTNU will focus on growth of single crystalline materials by molecular beam epitaxy (MBE). In particular, materials with antiferromagnetic and superconducting properties will be grown. These materials will be investigated by electronic transport studies at low temperatures (in the range of a few °K).
Molecular beam epitaxy is a technique used for the growth of ultrapure crystals in the form of thin films or nanostructures (e.g. nanowires and quantum dots). MBE growth allows for a large amount of control on the properties of a material, especially, the dimensions, interfaces and strain of a material can be controlled very precisely. MBE growth also enables the combination of materials into heterostructures and superlattices, where the individual materials can be stacked in thicknesses of a few nanometers or less, down to single atomic layers. In this way, the (quantum mechanical) properties of a material can be influenced to custom-tailor materials with specific behavior or to access new physical phenomena.
Quantum transport studies can be used to gain insight into the electrical response of nanostructures and low dimensional systems. In electrical transport studies, properties like material resistance, response to electric fields and the flow of electrical currents are investigated in a system. Usually, it is necessary to go to very low temperatures to access the quantum mechanical effects in a system, therefore most transport studies are carried out in cryostats, which allow measurements down to temperatures of a few milli-Kelvin, close to absolute zero.
Publication highlights:
- Bocquillon, E., et al., "Gapless Andreev bound states in the quantum spin Hall insulator HgTe." Nature Nanotechnology 12(2): 137-143. (2017)
- Deacon, R. S., et al., "Josephson Radiation from Gapless Andreev Bound States in HgTe-Based Topological Junctions." Physical Review X 7(2). (2017)
- Dziom, V., et al., "Observation of the universal magnetoelectric effect in a 3D topological insulator." Nature Communications 8. (2017)
- Hart, S., et al., "Controlled finite momentum pairing and spatially varying order parameter in proximitized HgTe quantum wells." Nature Physics 13(1): 87-93. (2017)
- Leubner, P., et al., "Strain Engineering of the Band Gap of HgTe Quantum Wells Using Superlattice Virtual Substrates." Physical Review Letters 117(8). (2016)
- Wiedenmann, J., et al., "4 pi-periodic Josephson supercurrent in HgTe-based topological Josephson junctions." Nature Communications 7. (2016)
- Ma, E. et al., "Unexpected edge conduction in mercury telluride quantum wells under broken time-reversal symmetry." Nature Communications 6. (2015)
- Sochnikov, I., et al., "Nonsinusoidal Current-Phase Relationship in Josephson Junctions from the 3D Topological Insulator HgTe." Physical Review Letters 114(6). (2015)
- Brüne, C.,et al., "Dirac-Screening Stabilized Surface-State Transport in a Topological Insulator." Physical Review X 4(4). (2014)
- Hart, S., et al., "Induced superconductivity in the quantum spin Hall edge." Nature Physics 10(9): 638-643. (2014)
- Nowack, K. C., et al., "Imaging currents in HgTe quantum wells in the quantum spin Hall regime." Nature Materials 12(9): 787-791. (2013)
- Oostinga, J. B., et al., "Josephson Supercurrent through the Topological Surface States of Strained Bulk HgTe." Physical Review X 3(2). (2013)
- Brüne, C., et al., "Spin polarization of the quantum spin Hall edge states." Nature Physics 8(6): 485-490. (2012)
- Brüne, C., et al., "Quantum Hall Effect from the Topological Surface States of Strained Bulk HgTe." Physical Review Letters 106(12). (2011)
- Büttner, B., et al., "Single valley Dirac fermions in zero-gap HgTe quantum wells." Nature Physics 7(5): 418-422. (2011)
- Shuvaev, A. M., et al., "Giant Magneto-Optical Faraday Effect in HgTe Thin Films in the Terahertz Spectral Range." Physical Review Letters 106(10). (2011)
- Brüne, C., et al., "Evidence for the ballistic intrinsic spin Hall effect in HgTe nanostructures." Nature Physics 6(6): 448-454. (2010)
- Roth, A., et al., "Nonlocal Transport in the Quantum Spin Hall State." Science 325(5938): 294-297. (2009)
- König, M., et al., "Quantum spin hall insulator state in HgTe quantum wells." Science 318(5851): 766-770. (2007)
Invited Talks
- RACIRI Summer School 2017, Ronneby, Sweden - invited talk 2017.
- Seminar of the condensed matter institute, TU Vienna, Austria - invited seminar talk, 2017.
- Seminar of the International Center for Nanosystems and the Max Plank Institute of Microstructure Physics, Halle, Germany - invited seminar talk, 2017.
- Workshop on Scientific Directions for Future Transmission Electron Microscopy, Jülich, Germany - invited speaker, 2016.
- SPICE Young Research Leaders Workshop, Mainz, Germany - invited speaker, 2016
- International Conference on Molecular Beam Epitaxy 2016, Montpellier, France - plenary speaker, 2016.
- 20th German-American Symposium by the Kavli Foundation and the Humbolt Foundation, Potsdam, Germany - invited speaker, 2016.
- Workshop Quantum Matter and Quantum Devices, Delft, Netherlands - invited speaker, 2015.
- SpinTech 8, Basel,Switzerland - invited speaker, 2015.
- International Conference on Magnetism, Barcelona, Spain - invited speaker, 2015.
- European Materials Research Society Fall Meeting, Warsaw, Poland - invited speaker, 2014.
- Topology and Nonequilibrium in Low-Dimensional Electronic Systems workshop, Dresden, Germany - invited speaker, 2013.
- Newspin 3, Mainz, Germany - invited speaker, 2013.
- Narrow Gap Semiconductors and Systems - NGS-16, Hangzhou, China - invited speaker, 2013.
- DPG Frühjahrstagung, Regensburg, Germany - invited speaker, 2013.
- Workshop on Spectroscopy of Novel Materials, Beatenberg, Switzerland - invited speaker, 2012.
- Workshop Nanopeter 2012, St. Petersburg, Russia - invited speaker, 2012.
- Seminar at the institute for physics at Karlsruhe Institue for Technology, Karlsruhe, Germany - invited seminar speaker, 2012.
- IOP Workshop on Frontiers of Dirac Electron Systems, Beijing, China - invited speaker, 2012.
- II-VI workshop, Seattle, USA - invited speaker, 2012.
- Seminar talk at IBM Almaden, group of Steward Parkin, IBM Almaden-San Jose, United states - invited seminar talk, 2012.
- High Magnetic Fields in Semiconductor Physics, HMF-20, Chamonix-Mont-Blanc, France - invited speaker, 2012.
- CECAM workshop Topological Materials, Bremen, Germany - invited speaker, 2012.
- 3rd EuroMagNET Summer School - Science in High Magnetic Fields, Rügen, Germany invited lecture, 2012.
- Tweedaagse van de Theoretische en Mathematische Fysica workshop, Domein Westhoek, Belgium - invited speaker, 2011.
- Seminar at the Institute for Theoretical Physics, Universität Köln, Germany - invited seminar talk, 2011.
- European Materials Research Society Fall Meeting, Warsaw, Poland invited speaker, 2011.
- Workshop on Interactions, Disorder, and Topology in Quantum Hall Systems, Dresden, Germany - invited speaker, 2010.
- SpinAge 2010, Watsonville California, USA - invited speaker, 2010.
- International Conference on Molecular Beam Epitaxy 2010, Berlin, Germany - invited speaker, 2010.
Competencies
Publications
2025
-
Chatterjee, Payel;
Nord, Magnus;
He, J.;
Meier, Dennis;
Brüne, Christoph.
(2025)
Challenges and insights in growing epitaxial FeSn thin films on GaAs(111) substrate using molecular beam epitaxy.
Journal of Vacuum Science & Technology. A. Vacuum, Surfaces, and Films
Academic article
-
He, Longfei;
Ludacka, Ursula;
Chatterjee, Payel;
Hartl, Matthias;
Meier, Dennis;
Brüne, Christoph.
(2025)
Tailoring MBE growth of c-Mn<inf>3</inf>Sn directly on MgO (111) from islands to film.
npj Quantum Materials
Academic article
2024
-
Demesh, Maksim;
Sorokin, Evgeni;
Einmo, Eskil;
Grivas, Christos;
Tolstik, Nikolai;
Okhrimchuk, Andrey.
(2024)
Depressed cladding buried waveguide lasers: single-crystal vs. polycrystalline Cr:ZnS.
Optica
Academic anthology/Conference proceedings
-
Schenk, Richard Justin;
Bentmann, Hendrik;
Brüne, Christoph.
(2024)
Angle-resolved Photoelectron Spectroscopy of Epitaxial CuFeS2 Thin Films.
Norges teknisk-naturvitenskapelige universitet
Norges teknisk-naturvitenskapelige universitet
Masters thesis
2023
-
Hale, Nathan;
Hartl, Matthias;
Humlíček, Josef;
Brüne, Christoph;
Kildemo, Morten.
(2023)
Dielectric function and band gap determination of single crystal CuFeS2 using FTIR-VIS-UV spectroscopic ellipsometry.
Optical Materials Express
Academic article
2022
-
Brinkman, Stefanie;
Brüne, Christoph.
(2022)
Growth of CuFeS2 thin films using molecular beam epitaxy.
Radboud University
Masters thesis
-
Brekke, Bjørnulf;
Malyshev, Roman;
Svenum, Ingeborg-Helene;
Selbach, Sverre Magnus;
Tybell, Per Thomas Martin;
Brüne, Christoph.
(2022)
Low-energy properties of electrons and holes in CuFeS2.
Physical review B (PRB)
Academic article
-
Hale, Nathan;
Simonsen, Ingve;
Brüne, Christoph;
Kildemo, Morten.
(2022)
Use of 4×4 transfer matrix method in the study of surface magnon polaritons via simulated attenuated total reflection measurements on the antiferromagnetic semiconductor MnF2.
Physical review B (PRB)
Academic article
2020
-
Brüne, Christoph;
Persson, Rolf Jonas.
(2020)
FEIL I FYSISKE MÅLINGER.
Institutt for Fysikk, NTNU
Compendium
-
Hajer, Jan;
Mantei, Willi;
Kessel, Maximilian;
Brüne, Christoph;
Wenner, Sigurd;
Van Helvoort, Antonius.
(2020)
Selective area grown ZnTe nanowires as the basis for quasi-one-dimensional CdTe-HgTe multishell heterostructures.
PHYSICAL REVIEW MATERIALS
Academic article
2019
-
Charnukha, A;
Sternbach, A;
Stinson, HT;
Schlereth, R;
Brüne, Christoph;
Molenkamp, Laurens W.
(2019)
Ultrafast nonlocal collective dynamics of Kane plasmon-polaritons in a narrow-gap semiconductor.
Science Advances
Academic article
-
Kessel, Maximilian;
Lunczer, Lukas;
Tarakina, Nadezda V;
Brüne, Christoph;
Buhmann, Hartmut;
Molenkamp, Laurens W.
(2019)
Residual strain in free-standing CdTe nanowires overgrown with HgTe.
Applied Physics Letters
Academic article
-
Lunczer, Lukas;
Leubner, Philipp;
Endres, Martin;
Muller, Valentin L;
Brüne, Christoph;
Buhmann, Hartmut.
(2019)
Approaching Quantization in Macroscopic Quantum Spin Hall Devices through Gate Training.
Physical Review Letters
Academic article
-
Hajer, Jan;
Kessel, Maximilian;
Brüne, Christoph;
Stehno, Martin P;
Buhmann, Hartmut;
Molenkamp, Laurens W.
(2019)
Proximity-Induced Superconductivity in CdTe-HgTe Core-Shell Nanowires.
Nano Letters
Academic article
Journal publications
-
Chatterjee, Payel;
Nord, Magnus;
He, J.;
Meier, Dennis;
Brüne, Christoph.
(2025)
Challenges and insights in growing epitaxial FeSn thin films on GaAs(111) substrate using molecular beam epitaxy.
Journal of Vacuum Science & Technology. A. Vacuum, Surfaces, and Films
Academic article
-
He, Longfei;
Ludacka, Ursula;
Chatterjee, Payel;
Hartl, Matthias;
Meier, Dennis;
Brüne, Christoph.
(2025)
Tailoring MBE growth of c-Mn<inf>3</inf>Sn directly on MgO (111) from islands to film.
npj Quantum Materials
Academic article
-
Hale, Nathan;
Hartl, Matthias;
Humlíček, Josef;
Brüne, Christoph;
Kildemo, Morten.
(2023)
Dielectric function and band gap determination of single crystal CuFeS2 using FTIR-VIS-UV spectroscopic ellipsometry.
Optical Materials Express
Academic article
-
Brekke, Bjørnulf;
Malyshev, Roman;
Svenum, Ingeborg-Helene;
Selbach, Sverre Magnus;
Tybell, Per Thomas Martin;
Brüne, Christoph.
(2022)
Low-energy properties of electrons and holes in CuFeS2.
Physical review B (PRB)
Academic article
-
Hale, Nathan;
Simonsen, Ingve;
Brüne, Christoph;
Kildemo, Morten.
(2022)
Use of 4×4 transfer matrix method in the study of surface magnon polaritons via simulated attenuated total reflection measurements on the antiferromagnetic semiconductor MnF2.
Physical review B (PRB)
Academic article
-
Hajer, Jan;
Mantei, Willi;
Kessel, Maximilian;
Brüne, Christoph;
Wenner, Sigurd;
Van Helvoort, Antonius.
(2020)
Selective area grown ZnTe nanowires as the basis for quasi-one-dimensional CdTe-HgTe multishell heterostructures.
PHYSICAL REVIEW MATERIALS
Academic article
-
Charnukha, A;
Sternbach, A;
Stinson, HT;
Schlereth, R;
Brüne, Christoph;
Molenkamp, Laurens W.
(2019)
Ultrafast nonlocal collective dynamics of Kane plasmon-polaritons in a narrow-gap semiconductor.
Science Advances
Academic article
-
Kessel, Maximilian;
Lunczer, Lukas;
Tarakina, Nadezda V;
Brüne, Christoph;
Buhmann, Hartmut;
Molenkamp, Laurens W.
(2019)
Residual strain in free-standing CdTe nanowires overgrown with HgTe.
Applied Physics Letters
Academic article
-
Lunczer, Lukas;
Leubner, Philipp;
Endres, Martin;
Muller, Valentin L;
Brüne, Christoph;
Buhmann, Hartmut.
(2019)
Approaching Quantization in Macroscopic Quantum Spin Hall Devices through Gate Training.
Physical Review Letters
Academic article
-
Hajer, Jan;
Kessel, Maximilian;
Brüne, Christoph;
Stehno, Martin P;
Buhmann, Hartmut;
Molenkamp, Laurens W.
(2019)
Proximity-Induced Superconductivity in CdTe-HgTe Core-Shell Nanowires.
Nano Letters
Academic article
Books
-
Demesh, Maksim;
Sorokin, Evgeni;
Einmo, Eskil;
Grivas, Christos;
Tolstik, Nikolai;
Okhrimchuk, Andrey.
(2024)
Depressed cladding buried waveguide lasers: single-crystal vs. polycrystalline Cr:ZnS.
Optica
Academic anthology/Conference proceedings
Report
-
Schenk, Richard Justin;
Bentmann, Hendrik;
Brüne, Christoph.
(2024)
Angle-resolved Photoelectron Spectroscopy of Epitaxial CuFeS2 Thin Films.
Norges teknisk-naturvitenskapelige universitet
Norges teknisk-naturvitenskapelige universitet
Masters thesis
-
Brinkman, Stefanie;
Brüne, Christoph.
(2022)
Growth of CuFeS2 thin films using molecular beam epitaxy.
Radboud University
Masters thesis
-
Brüne, Christoph;
Persson, Rolf Jonas.
(2020)
FEIL I FYSISKE MÅLINGER.
Institutt for Fysikk, NTNU
Compendium
Teaching
Courses
Outreach
2024
-
PosterChatterjee, Payel; He, Longfei; He, Jiali; Nord, Magnus; Meier, Dennis; Brüne, Christoph. (2024) Influence of Substrate Choice on the Epitaxial Growth and Properties of FeSn Thin Films. International Conference on Magnetism(ICM) 2024 , Bologna 2024-06-30 - 2024-07-05
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PosterDemesh, Maksim; Sorokin, Evgeni; Einmo, Eskil; Grivas, Christos; Tolstik, Nikolai; Okhrimchuk, Andrey. (2024) Depressed cladding buried waveguide lasers: single-crystal vs. polycrystalline Cr:ZnS. Optica Publishing Group High-Brightness Sources and Light-Driven Interactions Congress , Vienna 2024-03-12 - 2024-03-14
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Academic lectureMalyshev, Roman; Brekke, Bjørnulf; Svenum, Ingeborg-Helene; Selbach, Sverre Magnus; Brüne, Christoph; Brataas, Arne. (2024) Strain-induced multiferroic behavior in CuFeS2. NTNU European Conference on Applications of Polar Dielectrics (ECAPD 2024) , Trondheim, Norge 2024-06-16 - 2024-06-19
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PosterSchenk, Richard Justin; Mathisen, Anders Christian; Brinkman, Stefanie Suzanne; Tan, Xin Liang; Hartl, Matthias; Brüne, Christoph. (2024) Growth and surface characterization of epitaxial CuFeS2 thin films on Si(001). Deutsche Physikalische Gesellschaft 87th Annual Conference of the DPG and DPG Spring Meeting , Berlin 2024-03-17 - 2024-03-22
2023
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PosterHe, Jiali; Nord, Magnus Kristofer; Brüne, Christoph; Meier, Dennis. (2023) MBE growth of FeSn Kagome lattice on GaAs(111) substrate. Institute for Optoelectronic Systems and Microtechnology (ISOM), Polytechnical University of Madrid (UPM) 21st Euro MBE workshop 2023 , Madrid, Spain 2023-04-16 - 2023-04-19
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PosterChatterjee, Payel; He, Jiali; Nord, Magnus Kristofer; Meier, Dennis; Brüne, Christoph. (2023) MBE growth of FeSn Kagome lattice on GaAs(111) substrate. Institute for Optoelectronic Systems and Microtechnology (ISOM), Polytechnical University of Madrid (UPM) 21st Euro MBE workshop 2023 , Telecommunication Engineering School, Universidad Politécnica de Madrid, Madrid, Spain 2023-04-16 - 2023-04-19
2022
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PosterMalyshev, Roman; Brekke, Bjørnulf; Svenum, Ingeborg-Helene; Selbach, Sverre Magnus; Brüne, Christoph; Brataas, Arne. (2022) Effect of Biaxial Strain on the Electronic and Magnetic Properties of CuFeS2. Material Research Society (MRS) MRS Fall Meeting 2022 , Boston, MA, USA 2022-11-27 - 2022-12-02
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PosterChatterjee, Payel; Hartl, Matthias; Meier, Dennis; Brüne, Christoph. (2022) Growth and characterization of Fe-Sn kagome lattice for Spintronic application. 1st National Junior Scientist Research Conference in Nanoscience and Nanotechnology 2022-11-30 - 2022-12-02
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PosterChatterjee, Payel; Hartl, Matthias; He, Longfei; Johnsrud, Simen; Brinkman, Stefanie; Meier, Dennis. (2022) Epitaxial growth of Fe-Sn Kagome Lattice. Quantum Spintronics 2022 2022-05-13 - 2022-05-15
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PosterHale, Nathan Thomas; Kildemo, Morten; Simonsen, Ingve; Brüne, Christoph. (2022) The 4x4 transfer matrix method: a flexible and computationally efficient tool for exploring a system's surface magnon polaritons. NTNU Norwegian electrooptics meeting , Røros 2022-09-07 - 2022-09-09
2021
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PosterChatterjee, Payel; He, Longfei; Hartl, Matthias; Johnsrud, Simen; Brinkman, Stefanie S.; Meier, Dennis. (2021) MBE growth of frustrated Kagome lattice materials. QuSpin, NTNU Quantum Spintronics 2021, International workshop , Trondheim 2021-12-01 - 2021-12-02
2019
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Popular scientific lectureBrüne, Christoph; Hartl, Matthias; He, Longfei. (2019) Magnetic Materials at QuSpin. skolevisit fra Tønsberg videregående skole , Molecular Beam Epitaxy lab QuSpin 2019-10-11 - 2019-10-11
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Popular scientific lectureBrüne, Christoph; Chatterjee, Payel; Hartl, Matthias; He, Longfei. (2019) Magnetic materials for the future: Building up crystals one atomic layer at a time . Fysmat workshop under Teknologiuka for jenter - presentasjon og labbesøk , NTNU Trondheim 2019-11-07 - 2019-11-08