186 citations · 641 across the 23 of their papers we have counts for
20 papers · 1 filter
Electrical transport properties of atomically thin WSe2 using perpendicular magnetic anisotropy metal contacts
S. Gupta, R. Ohshima, Y. Ando +3
Tungsten diselenide, WSe2 shows excellent properties and become very promising material among two dimensional semiconductors. Wide band gap and large spin-orbit coupling along with…
Gigantic Anisotropy of Self-Induced Spin-Orbit Torque in Weyl Ferromagnet Co2MnGa
Motomi Aoki, Yuefeng Yin, Simon Granville +6
Spin-orbit torque (SOT) is receiving tremendous attention from both fundamental and application-oriented aspects. Co2MnGa, a Weyl ferromagnet that is in a class of topological quan…
Anomalous sign inversion of spin-orbit torque in ferromagnetic/nonmagnetic bilayer systems due to self-induced spin-orbit torque
Motomi Aoki, Ei Shigematsu, Ryo Ohshima +3
Self-induced spin-orbit torques (SI-SOTs) in ferromagnetic (FM) layers have been overlooked when estimating the spin Hall angle (SHA) of adjacent nonmagnetic (NM) layers. In this w…
Observation of gigantic spin conversion anisotropy in bismuth
Naoki Fukumoto, Ryo Ohshima, Motomi Aoki +9
Whilst the g-factor can be anisotropic due to the spin-orbit interaction (SOI), its existence in solids cannot be simply asserted from a band structure, which hinders progress on s…
Giant spin Hall angle in the Heusler alloy Weyl ferromagnet CoMnGa
L. Leiva, S. Granville, Y. Zhang +6
Weyl semimetals are playing a major role in condensed matter physics due to exotic topological properties, and their coexistence with ferromagnetism may lead to enhanced spin-relat…
Inplane spin orbit torque magnetization switching and its detection using the spin rectification effect at sub-GHz frequencies
Motomi Aoki, Ei Shigematsu, Ryo Ohshima +4
Inplane magnetization reversal of a permalloy/platinum bilayer was detected using the spin rectification effect. Using a sub GHz microwave frequency to excite spin torque ferromagn…