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Inverse spin Hall photocurrent in thin-film MoTe2

2020-06-28

 

Author(s): Zhang, Y (Zhang, Yang); Wang, Y (Wang, Yu); Liu, Y (Liu, Yu); Zeng, XL (Zeng, Xiao-Lin); Wu, J (Wu, Jing); Yu, JL (Yu, Jin-Ling); Chen, YH (Chen, Yong-Hai)

Source: APPLIED PHYSICS LETTERS Volume: 116 Issue: 22 DOI: 10.1063/1.5142737 Published: JUN 1 2020

Abstract: Circularly polarized photocurrent is observed in few-layer MoTe2 at room temperature. The spatial distribution of the circularly polarized photocurrent exhibits the characteristics of two wings, one positive and the other negative, not only in the middle of the sample but also near the electrodes. In addition, the circularly polarized photocurrent signal in the middle of the sample is opposite to the signal near the electrode at the same side. It is revealed that this phenomenon arises from the inverse spin Hall effect of spin-polarized photo-generated carriers, which is dominated by the carrier diffusion or the carrier drift depending upon the location of the light spot.

Accession Number: WOS:000538171800002

ISSN: 0003-6951

eISSN: 1077-3118

Full Text: https://aip.scitation.org/doi/10.1063/1.5142737



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