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.
| Original language | English |
|---|---|
| Article number | 063001 |
| Journal | Applied Physics Express |
| Volume | 12 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2019 Jan 1 |
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ASJC Scopus subject areas
- Engineering(all)
- Physics and Astronomy(all)
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Possible contribution of high-energy magnons to unidirectional magnetoresistance in metallic bilayers. / Kim, Kab Jin; Li, Tian; Kim, Sanghoon; Moriyama, Takahiro; Koyama, Tomohiro; Chiba, Daichi; Lee, Kyoung Jin; Lee, Hyun Woo; Ono, Teruo.
In: Applied Physics Express, Vol. 12, No. 6, 063001, 01.01.2019.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Possible contribution of high-energy magnons to unidirectional magnetoresistance in metallic bilayers
AU - Kim, Kab Jin
AU - Li, Tian
AU - Kim, Sanghoon
AU - Moriyama, Takahiro
AU - Koyama, Tomohiro
AU - Chiba, Daichi
AU - Lee, Kyoung Jin
AU - Lee, Hyun Woo
AU - Ono, Teruo
PY - 2019/1/1
Y1 - 2019/1/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85069442514&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85069442514&partnerID=8YFLogxK
U2 - 10.7567/1882-0786/ab1b54
DO - 10.7567/1882-0786/ab1b54
M3 - Article
VL - 12
JO - Applied Physics Express
JF - Applied Physics Express
SN - 1882-0778
IS - 6
M1 - 063001
ER -