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The absence of the Rashba spin‐splitting in undoped asymmetric quantum wells

Lookup NU author(s): Dr Jonathan Mar

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This is the final published version of an article that has been published in its final definitive form by AIP Publishing LLC, 2010.

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Abstract

It is widely accepted that quantum wells with potential profiles lacking inversion symmetry will exhibit spin‐split conduction band states due to the Rashba spin‐orbit interaction. Here we measure conduction band splitting for undoped asymmetric and symmetric GaAs/AlGaAs quantum wells in the absence of electric fields. Surprisingly the conduction band spin‐splitting measured in asymmetric quantum wells is no greater than that measured in symmetric quantum wells. This is a consequence of Ehrenfests theorem and the fact that the conduction and valence band edge profiles are related by a constant factor.


Publication metadata

Author(s): Eldridge PS, Leyland WJH, Mar JD, Lagoudakis PG, Winkler R, Karimov OZ, Henini M, Taylor D, Phillips RT, Harley RT

Publication type: Article

Publication status: Published

Journal: AIP Conference Proceedings

Year: 2010

Volume: 1199

Issue: 1

Online publication date: 15/01/2010

Date deposited: 15/06/2020

ISSN (print): 0094-243X

ISSN (electronic): 1551-7616

Publisher: AIP Publishing LLC

URL: https://doi.org/10.1063/1.3295469

DOI: 10.1063/1.3295469


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