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Elementary Electronic Excitation from a Two-Dimensional Hole Gas in the Presence of Spin-Orbit Interaction

Xu, Wen; Lin, L B

Description

We present a theoretical study of the elementary electronic excitation associated with plasmon modes in a two-dimensional hole gas (2DHG) in the presence of spin-orbit (SO) interaction induced by the Rashba effect, The calculation is carried out using a standard random-phase-approximation approach. It is found that, in such a spintronic system, plasmon excitation can be achieved via intra- and inter-SO electronic transitions around the Fermi level. As a result, the intra- and inter-SO plasmon...[Show more]

dc.contributor.authorXu, Wen
dc.contributor.authorLin, L B
dc.date.accessioned2015-12-13T22:50:07Z
dc.date.available2015-12-13T22:50:07Z
dc.identifier.issn0953-8984
dc.identifier.urihttp://hdl.handle.net/1885/80662
dc.description.abstractWe present a theoretical study of the elementary electronic excitation associated with plasmon modes in a two-dimensional hole gas (2DHG) in the presence of spin-orbit (SO) interaction induced by the Rashba effect, The calculation is carried out using a standard random-phase-approximation approach. It is found that, in such a spintronic system, plasmon excitation can be achieved via intra- and inter-SO electronic transitions around the Fermi level. As a result, the intra- and inter-SO plasmon modes can be observed. More importantly, the plasmon modes induced by inter-SO transition are optic-like and these modes can be directly applied to identify the Rashba spin splitting in 2DHG systems through optical measurements. The interesting features of the plasmon excitation in a spin-split 2DHG are analysed and discussed in detail. Moreover, the results obtained for a 2DHG arc compared with those obtained for a spin-splitting 2DEG reported very recently.
dc.publisherInstitute of Physics Publishing
dc.sourceJournal of Physics: Condensed Matter
dc.subjectKeywords: Electronic excitation; Plasmon excitation; Random phase approximation; Rashba effect; Spin orbit interaction; Spintronic system; Two dimensional hole gas; Approximation theory; Calculations; Electron transitions; Electronic structure; Fermi level; Ground
dc.titleElementary Electronic Excitation from a Two-Dimensional Hole Gas in the Presence of Spin-Orbit Interaction
dc.typeJournal article
local.description.notesImported from ARIES
local.description.refereedYes
local.identifier.citationvolume16
dc.date.issued2004
local.identifier.absfor020405 - Soft Condensed Matter
local.identifier.ariespublicationMigratedxPub8925
local.type.statusPublished Version
local.contributor.affiliationXu, Wen, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationLin, L B, Sichuan University
local.bibliographicCitation.startpage1777
local.bibliographicCitation.lastpage1788
local.identifier.doi10.1088/0953-8984/16/10/010
dc.date.updated2015-12-11T10:38:24Z
local.identifier.scopusID2-s2.0-1642317716
CollectionsANU Research Publications

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