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Title: Perspective: Interface generation of spin-orbit torques

We present that most of the modern spintronics developments rely on the manipulation of magnetization states via electric currents, which started with the discovery of spin transfer torque effects 20 years ago. By now, it has been realized that spin-orbit coupling provides a particularly efficient pathway for generating spin torques from charge currents. At the same time, spin-orbit effects can be enhanced at interfaces, which opens up novel device concepts. Here, we discuss two examples of such interfacial spin-orbit torques, namely, systems with inherently two-dimensional materials and metallic bilayers with strong Rashba spin-orbit coupling at their interfaces. We show how ferromagnetic resonance excited by spin-orbit torques can provide information about the underlying mechanisms. In addition, this article provides a brief overview of recent developments with respect to interfacial spin-orbit torques and an outlook of still open questions.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [3] ;  [6] ; ORCiD logo [3]
  1. Argonne National Lab. (ANL), Lemont, IL (United States). Materials Science Division; Northwestern Univ., Evanston, IL (United States). Department of Physics and Astronomy
  2. Argonne National Lab. (ANL), Lemont, IL (United States). Materials Science Division; Oakland Univ., Rochester, MI (United States). Department of Physics
  3. Argonne National Lab. (ANL), Lemont, IL (United States). Materials Science Division
  4. Argonne National Lab. (ANL), Lemont, IL (United States). Materials Science Division; Tsinghua University, and Collaborative Innovation Center of Quantum Matter, Beijing (China). State Key Laboratory of Low-Dimensional Quantum Physics and Department of Physics
  5. Argonne National Lab. (ANL), Lemont, IL (United States). Materials Science Division; Illinois Inst. of Technology, Chicago, IL (United States). Department of Physics
  6. Northwestern Univ., Evanston, IL (United States). Department of Physics and Astronomy
Publication Date:
Grant/Contract Number:
AC02-06CH11357
Type:
Accepted Manuscript
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 120; Journal Issue: 18; Journal ID: ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
OSTI Identifier:
1352575
Alternate Identifier(s):
OSTI ID: 1420711