Possible contribution of high-energy magnons to unidirectional magnetoresistance in metallic bilayers
- Authors
- Kim, Kab-Jin; Li, Tian; Kim, Sanghoon; Moriyama, Takahiro; Koyama, Tomohiro; Chiba, Daichi; Lee, Kyung-Jin; Lee, Hyun-Woo; Ono, Teruo
- Issue Date
- 1-6월-2019
- Publisher
- IOP PUBLISHING LTD
- Citation
- APPLIED PHYSICS EXPRESS, v.12, no.6
- Indexed
- SCIE
SCOPUS
- Journal Title
- APPLIED PHYSICS EXPRESS
- Volume
- 12
- Number
- 6
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/64834
- DOI
- 10.7567/1882-0786/ab1b54
- ISSN
- 1882-0778
- Abstract
- We investigate temperature, temporal and magnetic-field dependence of unidirectional magnetoresistance (UMR) in metallic bilayers. The UMR is found to decrease rapidly with reducing temperature and converges to a finite value at low-temperature limit. The temporal dependence shows that the UMR emerges in a nanosecond time scale, which depends on the current amplitude. The magnetic-field dependence shows that the UMR is almost constant up to 5 T. These experimental results imply that the high-energy magnons, which are not considered in existing theory, can be involved in the observed UMR. Our results therefore suggest that a more extended theory is required for the complete understanding of UMR. (C) 2019 The Japan Society of Applied Physics
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Collections - College of Engineering > Department of Materials Science and Engineering > 1. Journal Articles
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