Jeon, Jeehoon Kim, Seong Been Kim, Taeyueb Lee, OukJae Han, Suk Hee Kim, Hyung-jun Koo, Hyun Cheol Hong, Jinki 2024-01-19T17:03:44Z 2024-01-19T17:03:44Z 2022-02-17 2020-07 0003-6951 https://pubs.kist.re.kr/handle/201004/118414 In the field of spintronics, charge-to-spin conversion without a ferromagnetic material has attracted intense interest from researchers seeking to realize a fully electrical spin device because this design obviates the need for magnetic field control of magnetization. Instead of spin injection from a ferromagnetic source, spin-Hall-induced pure spin current has recently attracted considerable interest for transferring spin information into the semiconductor channel. In the present work, the spin is injected from a platinum electrode via the direct spin Hall effect and is subsequently detected in a strong Rashba channel via the inverse spin Hall effect. Before being detected, the spin state is modulated by a gate voltage; the signal observed with various channel lengths and gate voltages demonstrates this Rashba precessional modulation. The addition of Zeeman precession induced by an external magnetic field provides the signal-elucidating definite spin motion in the channel and clear interplay between the Rashba and Zeeman processions. Our approach opens a fascinating possibility for realizing a ferromagnet-free system for use in low-power and high-temperature spin transistors. English American Institute of Physics Spin transport at a Pt/InAs quantum well interface using spin Hall and Rashba effects Article 10.1063/5.0019120 1 Applied Physics Letters, v.117, no.4 Applied Physics Letters 117 4 N scie scopus 000556920400003 2-s2.0-85089505806 Physics, Applied Physics Article PRECESSION INVERSION spin transport Pt/InAs spin Hall effect Rashba effect interface