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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, Kyung-Jin,Kim, Kab-Jin,Ono, Teruo JAPAN SOCIETY OF APPLIED PHYSICS 2017 Applied physics express Vol.10 No.7
<P>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. (C) 2017 The Japan Society of Applied Physics</P>
Correlation between Charge Asphericity and Dzyaloshinskii-Moriya Interaction
Sanghoon Kim,Kohei Ueda,Gyungchoon Go,Peong-Hwa Jang,Kyung-Jin Lee,Abderrezak Belabbes,Aurelien Manchon,Motohiro Suzuki,Yoshinori Kotani,Tetsuya Nakamura,Kohji Nakamura,Tomohiro Koyama,Daichi Chiba,Ki 한국자기학회 2018 한국자기학회 학술연구발표회 논문개요집 Vol.2018 No.3