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

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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