Please use this identifier to cite or link to this item: https://doi.org/10.1063/1.4805079
Title: Anomalous circular photogalvanic effect of the spin-polarized two-dimensional electron gas in Mg0.2Zn0.8O/ZnO heterostructures at room temperature
Authors: Duan, J.X.
Tang, N.
Ye, J.D.
Mei, F.H.
Teo, K.L. 
Chen, Y.H.
Ge, W.K.
Shen, B.
Issue Date: 13-May-2013
Citation: Duan, J.X., Tang, N., Ye, J.D., Mei, F.H., Teo, K.L., Chen, Y.H., Ge, W.K., Shen, B. (2013-05-13). Anomalous circular photogalvanic effect of the spin-polarized two-dimensional electron gas in Mg0.2Zn0.8O/ZnO heterostructures at room temperature. Applied Physics Letters 102 (19) : -. ScholarBank@NUS Repository. https://doi.org/10.1063/1.4805079
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. © 2013 AIP Publishing LLC.
Source Title: Applied Physics Letters
URI: http://scholarbank.nus.edu.sg/handle/10635/81978
ISSN: 00036951
DOI: 10.1063/1.4805079
Appears in Collections:Staff Publications

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