Quantitative Study on Current-Induced Effect in an Antiferromagnet Insulator/Pt Bilayer Film
Name
PhysRevLett.123.247206.pdf
Description
Published version
Size
1.78 MB
Format
Adobe PDF
Checksum (MD5)
13c33cb7d9d34c74a056ac8d1584b4c6
Author(s)
Zhang, Pengxiang
Finley, Joseph
Safi, Taqiyyah
Liu, Luqiao
Date Issued
2019
Journal
Physical Review Letters
Publisher
American Physical Society (APS)
Version
Final published version
Abstract
© 2019 American Physical Society. A quantitative investigation of the current-induced torque in antiferromagnets represents a great challenge due to the lack of an independent method for controlling Neél vectors. By utilizing an antiferromagnetic insulator with the Dzyaloshinskii-Moriya interaction α-Fe2O3, we show that the Neél vector can be controlled with a moderate external field, which is further utilized to calibrate the current-induced magnetic dynamics. We find that the current-induced magnetoresistance change in antiferromagnets can be complicated by resistive switching that does not have a magnetic origin. By excluding nonmagnetic switching and comparing the current-induced dynamics with the field-induced one, we determine the nature and magnitude of current-induced effects in Pt/α-Fe2O3 bilayer films.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/PHYSREVLETT.123.247206
