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Lifetimes of a Two-Dimensional Electron Gas in the Presence of Spin-Orbit Interaction

Xu, Wen; Vasilopoulos, P; Wang, Xiao Lin

Description

Using the momentum-balance equation derived from a Boltzmann equation, we evaluate the quantum and transport lifetimes of a two-dimensional electron gas (2DEG) in the presence of spin-orbit interaction (SOI) induced by the Rashba effect. For low temperatures, the electronic transport lifetimes due to impurity scattering differ significantly between different spin branches. The effect is more pronounced for stronger SOI and/or lower electron density. In contrast, the quantum lifetimes depend...[Show more]

dc.contributor.authorXu, Wen
dc.contributor.authorVasilopoulos, P
dc.contributor.authorWang, Xiao Lin
dc.date.accessioned2015-12-13T23:11:53Z
dc.date.available2015-12-13T23:11:53Z
dc.identifier.issn0268-1242
dc.identifier.urihttp://hdl.handle.net/1885/87797
dc.description.abstractUsing the momentum-balance equation derived from a Boltzmann equation, we evaluate the quantum and transport lifetimes of a two-dimensional electron gas (2DEG) in the presence of spin-orbit interaction (SOI) induced by the Rashba effect. For low temperatures, the electronic transport lifetimes due to impurity scattering differ significantly between different spin branches. The effect is more pronounced for stronger SOI and/or lower electron density. In contrast, the quantum lifetimes depend very weakly on the strength of the SOI and are in line with experimental findings. These results hold for electron-impurity scattering via screened Coulomb or short-range δ-function potentials. The physical reason behind a small difference of the quantum lifetime in different spin branches is discussed.
dc.publisherInstitute of Physics Publishing
dc.sourceSemiconductor Science and Technology
dc.subjectKeywords: Electron-impurity scattering; Momemtum-balance equation; Spin-orbit interaction; Two-dimensional electron gas; Carrier concentration; Electron scattering; Electron transport properties; Fermi level; Low temperature operations; Partial differential equatio
dc.titleLifetimes of a Two-Dimensional Electron Gas in the Presence of Spin-Orbit Interaction
dc.typeJournal article
local.description.notesImported from ARIES
local.description.refereedYes
local.identifier.citationvolume19
dc.date.issued2004
local.identifier.absfor020404 - Electronic and Magnetic Properties of Condensed Matter; Superconductivity
local.identifier.ariespublicationMigratedxPub17244
local.type.statusPublished Version
local.contributor.affiliationXu, Wen, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationVasilopoulos, P, Concordia University
local.contributor.affiliationWang, Xiao Lin, University of Wollongong
local.bibliographicCitation.startpage224
local.bibliographicCitation.lastpage229
local.identifier.doi10.1088/0268-1242/19/2/017
dc.date.updated2015-12-12T08:29:37Z
local.identifier.scopusID2-s2.0-1242333075
CollectionsANU Research Publications

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