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Proceedings Paper

Emergent orbitronics and dissipationless magnetization control in complex magnets (Conference Presentation)
Author(s): Jan-Philipp Hanke; Dongwook Go; Patrick Buhl; Frank Freimuth; Stefan Blügel; Yuriy Mokrousov

Paper Abstract

The topological properties of magnets, encoded in the reciprocal space distribution of the Berry phase, have caused a revolution in our understanding of their transport properties. The discovery that the non-trivial geometry of states in a solid is ultimately related to the orbital properties of electrons allows us to predict from theoretical arguments a pronounced orbital magnetism in various situations ranging from Rashba systems to Chern insulators. Moreover, we demonstrate that a combination of complex geometry in real and reciprocal spaces leads to an emergence of topological orbital magnetism in non-collinear magnets, which overall opens new vistas in large current-induced orbital magnetization response and magnetization manipulation in antiferromagnets. Finally, we predict that in insulating systems with non-trivial topologies the strength of the magneto-electric response as manifested in the magnitude of the current-induced spin-orbit torques and Dzyaloshinskii-Moriya interaction can exceed significantly that of conventional metallic magnets, which opens new perspectives in dissipationless control of magnetization in magnetic materials.

Paper Details

Date Published: 19 October 2017
Proc. SPIE 10357, Spintronics X, 103570Z (19 October 2017); doi: 10.1117/12.2273819
Show Author Affiliations
Jan-Philipp Hanke, Institute for Advanced Simulation, Forschungszentrum Jülich GmbH (Germany)
Dongwook Go, Pohang Univ. of Science and Technology (Korea, Republic of)
Patrick Buhl, Institute for Advanced Simulation, Forschungszentrum Jülich GmbH (Germany)
Frank Freimuth, Institute for Advanced Simulation, Forschungszentrum Jülich GmbH (Germany)
Stefan Blügel, Institute for Advanced Simulation, Forschungszentrum Jülich GmbH (Germany)
Yuriy Mokrousov, Institut für Fortgeschrittene Simulation, Forschungszentrum Jülich GmbH (Germany)

Published in SPIE Proceedings Vol. 10357:
Spintronics X
Henri-Jean Drouhin; Jean-Eric Wegrowe; Manijeh Razeghi; Henri Jaffrès, Editor(s)

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