Center for Quantum Spintronics (QuSpin)

NTNU and SFF logos SFF QuSpin, Center for Quantum Spintronics

Our vision is to trigger a revolution in low-power information and communication technologies in an energy-efficient society.

QuSpin´s objective is to develop the basic science that uses quantum entities such as the electron spin as information carriers in radically different ways. We aim at groundbreaking basic research that is crucial to the  development of fast, high-capacity, material systems and tools for smaller and more power-efficient electronic devices.

QuSpin Objective and Goal

Objective and Goal

Illustration of a man and a formula

Our Energy Efficient Future

A motivation is the usage statistics behind Apple, Google, YouTube, Netflix, and data mining for Bitcoin, as a few examples of the staggering amounts of data transfer and storage capacity that is needed for these services. Followed by their continuously increasing energy consumption needs, new ways to handle this efficiently is a pressing matter.

Electronic spin counterclockwise. Illustration

The Electronic Spin

Quasi-particles can convey spin information with exceptional tiny energy losses, considering the dynamical evolution of the spin states for high-speed electronics. A supercurrent is a remarkable phenomenon where a current can flow in a supercurrent with no electrical resistance and no energy loss.

Four persons holding a glass plate. Photo

SFF QuSpin - Center of Excellence

The QuSpin center was in 2017 recognized as one of the ten new Centers of Excellence by the Research Council of Norway, 2017-2027. From left: Jacob Linder, Arne Brataas, Asle Sudbø and Justin Wells

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Featured Publications

Featured Publications 

 

Publications

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Minimal Models and Transport Properties of Unconventional 𝑝-Wave Magnets

Phys. Rev. Lett. 133, 236703
Published 3 December, 2024
Brekke, Bjørnulf; Sukhachov, Pavlo; Giil, Hans Gløckner; Brataas, Arne; Linder, Jacob.
Abstract

New unconventional compensated magnets with a 𝑝-wave spin polarization protected by a composite time-reversal translation symmetry have been proposed in the wake of altermagnets...

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Colloquium: Spin-orbit effects in superconducting hybrid structures

Rev. Mod. Phys. 96, 021003
Published 28 May, 2024
Morten Amundsen, Jacob Linder, Jason W. A. Robinson, Igor Žutić, and Niladri Banerjee
Abstract

Spin-orbit coupling (SOC) relates to the interaction between an electron’s motion and its spin and is ubiquitous in solid-state systems. Although the effect of SOC in normal-state phenomena has been extensively studied, its role in superconducting hybrid structures and devices elicits many unexplored questions.…

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Chirality-Driven Orbital Angular Momentum and Circular Dichroism in CoSi

Phys. Rev. Lett. 132, 196402
Published 10 May, 2024
S. S. Brinkman, Xin Liang Tan, B. Brekke, A. C. Mathisen, Ø. Finnseth, R. J. Schenk, K. Hagiwara, Meng-Jie Huang, J. Buck, M. Kalläne, M. Hoesch, K. Rossnagel, Kui-Hon Ou Yang, Minn-Tsong Lin, Guo-Jiun Shu, Ying-Jiun Chen, C. Tusche, and H. Bentmann.
Abstract

Chiral crystals and molecules were recently predicted to form an intriguing platform for unconventional orbital physics…

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Main Research Topics

Researchers Work and Collaboration