Observation of the spin-Hall effect in Pt/GaAs by circular polarized photoconductivity-Reference-Cited by-同舟云学术

Observation of the spin-Hall effect in Pt/GaAs by circular polarized photoconductivity

Published:2022-01-07 Issue:2 Volume:30 Page:2089
ISSN:1094-4087
Container-title:Optics Express
language:en
Short-container-title:Opt. Express

Author:

Zeng Xiao Lin¹²^ORCID,Liu Yu¹²,Zhang Yang¹²³^ORCID,Wu Jing¹²^ORCID,Zhu Shen Bo¹²,Chen Yong Hai¹²

Affiliation:

1. Chinese Academy of Sciences

2. University of Chinese Academy of Sciences

3. China University of Mining and Technology

Abstract

Electrically generated spin accumulation due to the spin Hall effect of Pt/GaAs is detected by circular polarized photoconductivity (CPPC), which shows electron spins with different polarizations accumulated around opposite sample boundaries. An optical absorption model incorporating spin is used to explain these features. The detailed analysis of the observed degree of circular polarization of the photocurrent strongly suggests that Pt and GaAs have the same spin accumulation length in the Pt/GaAs heterostructure.

Funder

National Natural Science Foundation of China

National Key Research and Development Program of China

Publisher

Optica Publishing Group

Subject

Atomic and Molecular Physics, and Optics

Reference30 articles.

1. Magnetization in lateral superlattices induced by strong dc and ac electric fields

2. Chirality and intrinsic dissipation of spin modes in two-dimensional electron liquids

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4. Edge spin accumulation: Spin Hall effect without bulk spin current

5. Role of Spin Hall Effect in the Topological Side Surface Conduction

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