Please use this identifier to cite or link to this item: https://doi.org/10.1088/0953-8984/20/11/115206
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dc.titleSpin polarization of tunneling current in barriers with spin-orbit coupling
dc.contributor.authorFujita, T.
dc.contributor.authorJalil, M.B.A.
dc.contributor.authorTan, S.G.
dc.date.accessioned2014-04-24T07:24:48Z
dc.date.available2014-04-24T07:24:48Z
dc.date.issued2008-03-19
dc.identifier.citationFujita, T., Jalil, M.B.A., Tan, S.G. (2008-03-19). Spin polarization of tunneling current in barriers with spin-orbit coupling. Journal of Physics Condensed Matter 20 (11) : -. ScholarBank@NUS Repository. https://doi.org/10.1088/0953-8984/20/11/115206
dc.identifier.issn09538984
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/51041
dc.description.abstractWe present a general method for evaluating the maximum transmitted spin polarization and optimal spin axis for an arbitrary spin-orbit coupling (SOC) barrier system, in which the spins lie in the azimuthal plane and finite spin polarization is achieved by wavevector filtering of electrons. Besides momentum filtering, another prerequisite for finite spin polarization is asymmetric occupation or transmission probabilities of the eigenstates of the SOC Hamiltonian. This is achieved most efficiently by resonant tunneling through multiple SOC barriers. We apply our analysis to common SOC mechanisms in semiconductors: pure bulk Dresselhaus SOC, heterostructures with mixed Dresselhaus and Rashba SOC and strain-induced SOC. In particular, we find that the interplay between Dresselhaus and Rashba SOC effects can yield several advantageous features for spin filter and spin injector functions, such as increased robustness to wavevector spread of electrons. © IOP Publishing Ltd.
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentDATA STORAGE INSTITUTE
dc.contributor.departmentELECTRICAL & COMPUTER ENGINEERING
dc.description.doi10.1088/0953-8984/20/11/115206
dc.description.sourcetitleJournal of Physics Condensed Matter
dc.description.volume20
dc.description.issue11
dc.description.page-
dc.description.codenJCOME
dc.identifier.isiut000254101200032
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