A proposal for the measurement of Rashba and Dresselhaus spinaorbit interaction strengths in a single sample

We establish an exact analytical treatment for the determination of the strengths of the Rashba and Dresselhaus spinaorbit interactions in a single sample by measuring persistent spin current. A hidden symmetry is exploited in the Hamiltonian to show that the spin current vanishes when the strength...

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Bibliographic Details
Published in:Physics letters. A 2012-06, Vol.376 (30-31), p.2147-2150
Main Authors: Maiti, Santanu K, Sil, Shreekantha, Chakrabarti, Arunava
Format: Article
Language:English
Subjects:
Disorders
Mathematical analysis
Proposals
Solid state physics
Strength
Symmetry
Online Access:Get full text
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Summary:We establish an exact analytical treatment for the determination of the strengths of the Rashba and Dresselhaus spinaorbit interactions in a single sample by measuring persistent spin current. A hidden symmetry is exploited in the Hamiltonian to show that the spin current vanishes when the strength of the Dresselhaus interaction becomes equal to the strength of the Rashba term. The results are sustained even in the presence of disorder and thus an experiment in this regard will be challenging.
ISSN:0375-9601
DOI:10.1016/j.physleta.2012.05.027