61 citations · 164 across the 11 of their papers we have counts for
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Circular photogalvanic effect in an inversion-symmetry-broken bilayer germanium nanosheet
Taiki Nishijima, Ei Shigematsu, Ryo Ohshima +7
Spin-to-charge conversion in monolayer and bilayer germanium(Ge) nanosheets was demonstrated via the circular photogalvanic effect (CPGE). The CPGE current generated in a spin-spli…
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…
Optical visualization of the enhanced spin Hall effect in bismuth doped silicon
Taiki Nishijima, Yakun Liu, Dushyant Kumar +8
Direct visualizations of spin accumulation due to the enhanced spin Hall effect (SHE) in bismuth (Bi) - doped silicon (Si) at room temperature are realized by using helicity-depend…
Spin-wave-induced lateral temperature gradient in a YIG thin film/GGG system excited in an ESR cavity
Ei Shigematsu, Yuichiro Ando, Sergey Dushenko +2
Lateral thermal gradient of an yttrium iron garnet (YIG) film under the microwave application in the cavity of the electron spin resonance system (ESR) was measured at room tempera…