Sign reversal and amplitude enhancement of unidirectional magnetoresistance in CoFe2O4/Pt heterostructures due to spin canting-Reference-Cited by-同舟云学术

Sign reversal and amplitude enhancement of unidirectional magnetoresistance in CoFe2O4/Pt heterostructures due to spin canting

Published:2024-06-24 Issue:26 Volume:124 Page:
ISSN:0003-6951
Container-title:Applied Physics Letters
language:en
Short-container-title:

Author:

Guo J. Q.¹^ORCID,Meng K. K.¹²^ORCID,Zhang T. Z.¹,Liu J. J.¹,Chen J. K.¹^ORCID,Wu Y.¹^ORCID,Xu X. G.¹^ORCID,Jiang Y.¹^ORCID

Affiliation:

1. School of Materials Science and Engineering, University of Science and Technology Beijing 1 , Beijing 100083, China

2. Department of Applied Physics, The University of Tokyo 2 , Tokyo 113-8656, Japan

Abstract

We report the observation of unidirectional magnetoresistance (UMR) in the ferrimagnetic insulator CoFe2O4(CFO)/Pt heterostructures, which stem from the giant interfacial Rashba–Edelstein effect. Furthermore, UMR has been found to show sign reversal and amplitude enhancement characteristics with decrease in temperature. We have ascribed it to the modulated distortion of Fermi contours due to pronounced spin canting at low temperatures. The presence of spin canting induced interfacial magnetic state has also been demonstrated by spin Hall magnetoresistance in CFO/Pt/Co/Al2O3 films. Our work reveals the interfacial magnetic state modulated UMR in CFO/Pt bilayers, thereby paving the way for extending its applications in ferrimagnet-based spintronic devices.

Funder

National Key Research and Development Program of China

Publisher

AIP Publishing

Link

https://pubs.aip.org/aip/apl/article-pdf/doi/10.1063/5.0202653/20008474/262401_1_5.0202653.pdf

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