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Transverse focusing of spin-polarized photocurrents

Li, J, Gilbertson, AM, Litvinenko, KL, Cohen, LF and Clowes, SK (2012) Transverse focusing of spin-polarized photocurrents Physical Review B (Condensed Matter and Materials Physics), 85. ISSN 1098-0121

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Abstract

We measure transverse magnetically focused photocurrent signals in an InSb/InAlSb quantum well device. Using optical spin orientation by modulated circularly polarized light an electron spin-dependent signal is observed due to the spin-orbit interaction. Simulations of the focusing signal are performed using a classical billiard ball model, which includes both spin precession and a spin-dependent electron energy. The simulated data suggest that a signal dependent on the helicity of the incident light is expected for a Rashba parameter α > 0.1 eVÅ and that a splitting of the focusing signal is not expected to be observed in linear polarized photocurrent and purely electrical measurements.

Item Type: Article
Additional Information: Copyright 2012 The American Physical Society
Divisions: Faculty of Engineering and Physical Sciences > Electronic Engineering > Advanced Technology Institute > Photonics
Faculty of Engineering and Physical Sciences > Physics
Depositing User: Symplectic Elements
Date Deposited: 24 Jan 2012 22:22
Last Modified: 23 Sep 2013 19:04
URI: http://epubs.surrey.ac.uk/id/eprint/148877

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