Abstract
The asymmetric magnetoresistance (MR) in Py/Pt bilayers is investigated. It increases linearly with respect to the current density up to a threshold and increases more rapidly above this threshold. To reveal the origin of the threshold behavior, we investigate the magnetic field dependence of the asymmetric MR. It is found that the magnetic field strongly suppresses the asymmetric MR only above the threshold current density. Micromagnetic simulation reveals that the reduction of magnetization due to the spin-torque oscillation can be the origin of the threshold behavior of the asymmetric MR.
| Original language | English |
|---|---|
| Article number | 073001 |
| Journal | Applied Physics Express |
| Volume | 10 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 2017 Jul 1 |
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ASJC Scopus subject areas
- Engineering(all)
- Physics and Astronomy(all)
Cite this
Origin of threshold current density for asymmetric magnetoresistance in Pt/Py bilayers. / Li, Tian; Kim, Sanghoon; Lee, Seung Jae; Lee, Seo Won; Koyama, Tomohiro; Chiba, Daichi; Moriyama, Takahiro; Lee, Kyoung Jin; Kim, Kab Jin; Ono, Teruo.
In: Applied Physics Express, Vol. 10, No. 7, 073001, 01.07.2017.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Origin of threshold current density for asymmetric magnetoresistance in Pt/Py bilayers
AU - Li, Tian
AU - Kim, Sanghoon
AU - Lee, Seung Jae
AU - Lee, Seo Won
AU - Koyama, Tomohiro
AU - Chiba, Daichi
AU - Moriyama, Takahiro
AU - Lee, Kyoung Jin
AU - Kim, Kab Jin
AU - Ono, Teruo
PY - 2017/7/1
Y1 - 2017/7/1
N2 - The asymmetric magnetoresistance (MR) in Py/Pt bilayers is investigated. It increases linearly with respect to the current density up to a threshold and increases more rapidly above this threshold. To reveal the origin of the threshold behavior, we investigate the magnetic field dependence of the asymmetric MR. It is found that the magnetic field strongly suppresses the asymmetric MR only above the threshold current density. Micromagnetic simulation reveals that the reduction of magnetization due to the spin-torque oscillation can be the origin of the threshold behavior of the asymmetric MR.
AB - The asymmetric magnetoresistance (MR) in Py/Pt bilayers is investigated. It increases linearly with respect to the current density up to a threshold and increases more rapidly above this threshold. To reveal the origin of the threshold behavior, we investigate the magnetic field dependence of the asymmetric MR. It is found that the magnetic field strongly suppresses the asymmetric MR only above the threshold current density. Micromagnetic simulation reveals that the reduction of magnetization due to the spin-torque oscillation can be the origin of the threshold behavior of the asymmetric MR.
UR - http://www.scopus.com/inward/record.url?scp=85021838850&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85021838850&partnerID=8YFLogxK
U2 - 10.7567/APEX.10.073001
DO - 10.7567/APEX.10.073001
M3 - Article
AN - SCOPUS:85021838850
VL - 10
JO - Applied Physics Express
JF - Applied Physics Express
SN - 1882-0778
IS - 7
M1 - 073001
ER -