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Title: Spin-orbit torques in ferrimagnetic GdFeCo alloys

In this work, the spin-orbit torque switching of ferrimagnetic Gd x(Fe 90Co 10) 100-xfilms was studied for both transition metal (TM)-rich and rare earth (RE)-rich configurations. The spin-orbit torque driven magnetization switching follows the same sense in TM-rich and RE-rich samples with respect to the total magnetization, but the sense of the switching is reversed with respect to the TM magnetization. This indicates that the sign of the spin-orbit-torque-driven magnetic switching follows the total magnetization, although transport based techniques such as anomalous Hall effect are only sensitive to the transition metal magnetization. Finally, these results provide important insight into the physics of spin angular momentum transfer in materials with antiferromagnetically coupled sublattices.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [2] ;  [5] ;  [6]
  1. Univ. of California, Berkeley, CA (United States). Department of Physics
  2. Nagoya University (Japan). Department of Electrical Engineering and Computer Science
  3. Univ. of California, Berkeley, CA (United States). Department of Materials Science and Engineering
  4. Univ. of California, Berkeley, CA (United States). Department of Physics; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Science Division
  5. Nagoya University (Japan). Institute of Materials and Systems for Sustainability
  6. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Science Division; Univ. of California, Berkeley, CA (United States). Department of Electrical Engineering and Computer Sciences
Publication Date:
Grant/Contract Number:
AC02-05CH11231; AC02-05-CH11231
Type:
Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 109; Journal Issue: 11; Related Information: © 2016 Author(s).; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)
Research Org:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org:
SC-22.2 USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
OSTI Identifier:
1456957
Alternate Identifier(s):
OSTI ID: 1325302