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Title
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Impact of Dresselhaus versus Rashba spin-orbit coupling on the Holstein polaron
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Author
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Abstract
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| We utilize an exact variational numerical procedure to calculate the ground-state properties of a polaron in the presence of Rashba and linear Dresselhaus spin-orbit coupling. We find that when the linear Dresselhaus spin-orbit coupling approaches the Rashba spin-orbit coupling, the Van Hove singularity in the density of states will be shifted away from the bottom of the band and finally disappear when the two spin-orbit couplings are tuned to be equal. The effective mass will be suppressed; the trend will become more significant for low phonon frequency. The presence of two dominant spin-orbit couplings will make it possible to tune the effective mass with more varied observables. |
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Language
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English
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Source (journal)
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Physical review : B : condensed matter and materials physics. - Lancaster, Pa, 1998 - 2015
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Publication
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Lancaster, Pa
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2012
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ISSN
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1098-0121
[print]
1550-235X
[online]
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DOI
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10.1103/PHYSREVB.85.205112
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Volume/pages
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85
:20
(2012)
, p. 205112,1-205112,5
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Article Reference
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205112
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ISI
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000303794900003
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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Full text (open access)
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