Non-Local Detection And Electric Modulation Of Valley Coupled Spin Photocurrents In Wse2-Bi2se3 Heterostructure Device

Minji Noh,Soonyoung Cha,Je-Hyun Kim,Jangyup Son,Hyemin Bae,Doeon Lee,Hoil Kim,Jekwan Lee,Hoseung Shin,Sangwan Sim,Seunghoon Yang,Sooun Lee,Gangtae Jin,Moon-Ho Jo,Wooyoung Shim,Chul-Ho Lee,Jun Sung Kim,Dohun Kim,Hyunyong Choi

conference on lasers and electro optics（2018）

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摘要

We perform a non-local circular photogalvanic measurement and directly generate the valley-coupled spin-polarized electrons from WSe2 to Bi2Se3 topological insulators. Our WSe2-Bi2Se3 heterostructure offers a new optoelectronic platform toward the electrically-controllable valley-spin degree of freedom.

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关键词

spin photocurrents,non-local,valley-coupled

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