A controllable spin prism
Date
2009
Authors
Hakiolu, T.
Editor(s)
Advisor
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Source Title
Journal of Physics : Condensed Matter
Print ISSN
0953-8984
Electronic ISSN
1361-648X
Publisher
IOP Institute of Physics Publishing
Volume
21
Issue
2
Pages
Language
English
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Journal Title
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Abstract
Based on Khodas et al (2004 Phys. Rev. Lett. 92 086602), we propose a device acting like a controllable prism for an incident spin. The device is a large quantum well where Rashba and Dresselhaus spin-orbit interactions are present and controlled by the plunger gate potential, the electric field and the barrier height. A totally destructive interference can be manipulated externally between the Rashba and Dresselhaus couplings. The spin-dependent transmission/reflection amplitudes are calculated as the control parameters are changed. The device operates as a spin prism/converter/filter in different regimes and may stimulate research in promising directions in spintronics in analogy with linear optics. © 2009 IOP Publishing Ltd.