Spin symmetry and spin current of helicity eigenstates of the Luttinger Hamiltonian

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dc.creatorWang, Xindong
dc.creatorZhang, X. -G.
dc.date2004-07-27
dc.date.accessioned2026-07-07T02:59:25Z
dc.date.available2026-07-07T02:59:25Z
dc.descriptionA general spin symmetry argument is proposed for spin currents in semiconductors. In particular, due to the symmetry with respect to spin polarization of the helicity eigenstates of the Luttinger Hamiltonian for a hole-doped semiconductor, the spin polarized flux from a single helicity eigenstate induced by an external electric field, is canceled exactly when all such contributions from eigenstates that are degenerate in energy are summed. Thus, the net spin current predicted by Murakami et al, Science 301, 1348 (2003), cannot be produced by such a Hamiltonian. Possible symmetry breaking mechanisms which may generate a spin current are discussed.
dc.identifierhttps://arxiv.org/abs/cond-mat/0407699
dc.identifierhttp://arxiv.org/abs/cond-mat/0407699
dc.identifierJMMM Vol 288C pp 297-300 (2005)
dc.identifierdoi:10.1016/j.jmmm.2004.09.109
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/24502
dc.subjectMaterials Science
dc.subjectMesoscale and Nanoscale Physics
dc.titleSpin symmetry and spin current of helicity eigenstates of the Luttinger Hamiltonian
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