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Spin hall edge spin polarization in a ballistic 2D electron system | V A Zyuzin
; P G Silvestrov
; E G Mishchenko
; | Date: |
7 Sep 2007 | Journal: | Phys Rev Lett, 99 (10), 106601 | Abstract: | Universal properties of the spin Hall effect in ballistic 2D electron systems are addressed. The net spin polarization across the edge of the conductor is second order, approximately lambda2, in spin-orbit coupling constant independent of the form of the boundary potential, with the contributions of normal and evanescent modes each being approximately radical lambda but of opposite signs. This general result is confirmed by the analytical solution for a hard-wall boundary, which also yields the detailed distribution of the local spin polarization. The latter shows fast (Friedel) oscillations with the spin-orbit coupling entering via the period of slow beatings only. Long-wavelength contributions of evanescent and normal modes exactly cancel each other in the spectral distribution of the local spin density. | Source: | PubMed, pmid17930400 | Services: | Forum | Review | Favorites |
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