Spin continuity equation and definition of spin current

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dc.creatorZhou, Xiang
dc.creatorZhang, Zhenyu
dc.creatorHu, Cheng-Zheng
dc.date2009-04-24
dc.date2009-04-28
dc.date.accessioned2026-07-07T13:08:48Z
dc.date.available2026-07-07T13:08:48Z
dc.descriptionFor an electron, a spin-1/2 particle, the spin charge $\mathbf{s}$, a real pseudovector with constant length, could determine the spin polarization properties in quantum mechanics. Since spin density $ρ_{\mathbf{s}}$ could be expressed as the product of probability density $ρ$ and the spin charge $\mathbf{s}$, the spin continuity equation could be derived from fundamental principles of quantum mechanics and the definition of spin current arise naturally. Only in some specific conditions the conventional definition of spin current coincides with ours. The equilibrium spin currents would vanish automatically in two-dimensional electron gas with Rashba spin-orbit interaction by using our definition of spin current.
dc.descriptionAdd discussion of the relationship between our spin current definition and the conventional one
dc.identifierhttps://arxiv.org/abs/0904.3796
dc.identifierhttp://arxiv.org/abs/0904.3796
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/228533
dc.subjectMesoscale and Nanoscale Physics
dc.titleSpin continuity equation and definition of spin current
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