Current-induced spin polarization in spin-orbit-coupled two-dimensional electron systems

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dc.creatorLiu, Ming-Hao
dc.creatorChen, Son-Hsien
dc.creatorChang, Ching-Ray
dc.date2008-02-04
dc.date2008-10-19
dc.date.accessioned2026-07-07T10:12:34Z
dc.date.available2026-07-07T10:12:34Z
dc.descriptionCurrent-induced spin polarization (CISP) is rederived in ballistic spin-orbit-coupled electron systems, based on equilibrium statistical mechanics. A simple and useful picture is correspondingly proposed to help understand the CISP and predict the polarization direction. Nonequilibrium Landauer-Keldysh formalism is applied to demonstrate the validity of the statistical picture, taking the linear Rashba-Dresselhaus [001] two-dimensional system as a specific example. Spin densities induced by the CISP in semiconductor heterostructures and in metallic surface states are compared, showing that the CISP increases with the spin splitting strength and hence suggesting that the CISP should be more observable on metal and semimetal surfaces due to the discovered strong Rashba splitting. An application of the CISP designed to generate a spin-Hall pattern in the inplane, instead of the out-of-plane, component is also proposed.
dc.description7 pages, 6 figures, 1 table, Phys. Rev. B, in press
dc.identifierhttps://arxiv.org/abs/0802.0366
dc.identifierhttp://arxiv.org/abs/0802.0366
dc.identifierPhys. Rev. B 78, 165316 (2008)
dc.identifierdoi:10.1103/PhysRevB.78.165316
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/172221
dc.subjectMesoscale and Nanoscale Physics
dc.titleCurrent-induced spin polarization in spin-orbit-coupled two-dimensional electron systems
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