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Title: Control of spin dynamics in a two-dimensional electron gas by electromagnetic dressing
Authors: Pervishko, A. A.
Kibis, Oleg V.
Shelykh, Ivan A.
Morina, Skender
Keywords: Physics and Applied Physics
Issue Date: 2015
Source: Pervishko, A. A., Kibis, O. V., Morina, S., & Shelykh, I. A. (2015). Control of spin dynamics in a two-dimensional electron gas by electromagnetic dressing. Physical Review B, 92, 205403-.
Series/Report no.: Physical Review B
Abstract: We solved the Schrödinger problem for a two-dimensional electron gas (2DEG) with the Rashba spin-orbit interaction in the presence of a strong high-frequency electromagnetic field (dressing field). The found eigenfunctions and eigenenergies of the problem are used to describe the spin dynamics of the dressed 2DEG within the formalism of the density matrix response function. Solving the equations of spin dynamics, we show that the dressing field can switch the spin relaxation in the 2DEG between the cases corresponding to the known Elliott-Yafet and D'yakonov-Perel' regimes. As a result, the spin properties of the 2DEG can be tuned by a high-frequency electromagnetic field. The present effect opens an unexplored way for controlling the spin with light and, therefore, forms the physical prerequisites for creating light-tuned spintronics devices.
ISSN: 1098-0121
DOI: 10.1103/PhysRevB.92.205403
Schools: School of Physical and Mathematical Sciences 
Rights: © 2015 American Physical Society. This paper was published in Physical Review B and is made available as an electronic reprint (preprint) with permission of American Physical Society. The published version is available at: []. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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