Anomalous circular photogalvanic effect of the spin-polarized two-dimensional electron gas in Mg0.2Zn0.8O/ZnO heterostructures at room temperature

J. X. Duan; N. Tang; J. D. Ye; F. H. Mei; K. L. Teo; Y. H. Chen; W. K. Ge; B. Shen

doi:10.1063/1.4805079

Anomalous circular photogalvanic effect of the spin-polarized two-dimensional electron gas in Mg_0.2Zn_0.8O/ZnO heterostructures at room temperature

J. X. Duan, N. Tang, J. D. Ye, F. H. Mei, K. L. Teo, Y. H. Chen, W. K. Ge, B. Shen

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Abstract

A spin-related photocurrent with swirly distribution and anomalous dependence of the total spin-related photocurrent on the incident angle were observed on spin-polarized two-dimensional gas in a Mg_0.2Zn _0.8O/ZnO heterostructure under illumination of circular polarized light at room temperature. The ferromagnetic two-dimensional Rashba model was adopted to interpret the results. It is demonstrated that a radial spin current induced by the gradient of the spin-polarized electron density is the origin of the anomalousness. This spin current only exists in spin polarized systems.

Original language	English
Article number	192405
Journal	Applied Physics Letters
Volume	102
Issue number	19
DOIs	https://doi.org/10.1063/1.4805079
Publication status	Published - 13 May 2013

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title = "Anomalous circular photogalvanic effect of the spin-polarized two-dimensional electron gas in Mg0.2Zn0.8O/ZnO heterostructures at room temperature",

abstract = "A spin-related photocurrent with swirly distribution and anomalous dependence of the total spin-related photocurrent on the incident angle were observed on spin-polarized two-dimensional gas in a Mg0.2Zn 0.8O/ZnO heterostructure under illumination of circular polarized light at room temperature. The ferromagnetic two-dimensional Rashba model was adopted to interpret the results. It is demonstrated that a radial spin current induced by the gradient of the spin-polarized electron density is the origin of the anomalousness. This spin current only exists in spin polarized systems.",

author = "Duan, {J. X.} and N. Tang and Ye, {J. D.} and Mei, {F. H.} and Teo, {K. L.} and Chen, {Y. H.} and Ge, {W. K.} and B. Shen",

year = "2013",

month = may,

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doi = "10.1063/1.4805079",

language = "English",

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journal = "Applied Physics Letters",

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T1 - Anomalous circular photogalvanic effect of the spin-polarized two-dimensional electron gas in Mg0.2Zn0.8O/ZnO heterostructures at room temperature

AU - Duan, J. X.

AU - Tang, N.

AU - Ye, J. D.

AU - Mei, F. H.

AU - Teo, K. L.

AU - Chen, Y. H.

AU - Ge, W. K.

AU - Shen, B.

PY - 2013/5/13

Y1 - 2013/5/13

N2 - A spin-related photocurrent with swirly distribution and anomalous dependence of the total spin-related photocurrent on the incident angle were observed on spin-polarized two-dimensional gas in a Mg0.2Zn 0.8O/ZnO heterostructure under illumination of circular polarized light at room temperature. The ferromagnetic two-dimensional Rashba model was adopted to interpret the results. It is demonstrated that a radial spin current induced by the gradient of the spin-polarized electron density is the origin of the anomalousness. This spin current only exists in spin polarized systems.

AB - A spin-related photocurrent with swirly distribution and anomalous dependence of the total spin-related photocurrent on the incident angle were observed on spin-polarized two-dimensional gas in a Mg0.2Zn 0.8O/ZnO heterostructure under illumination of circular polarized light at room temperature. The ferromagnetic two-dimensional Rashba model was adopted to interpret the results. It is demonstrated that a radial spin current induced by the gradient of the spin-polarized electron density is the origin of the anomalousness. This spin current only exists in spin polarized systems.

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U2 - 10.1063/1.4805079

DO - 10.1063/1.4805079

M3 - Article

SN - 0003-6951

VL - 102

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 19

M1 - 192405

ER -

Anomalous circular photogalvanic effect of the spin-polarized two-dimensional electron gas in Mg_0.2Zn_0.8O/ZnO heterostructures at room temperature

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