Intrinsic spin current for an arbitrary Hamiltonian and scattering potential

Details Intrinsic spin current for an arbitrary Hamiltonian and scattering potential Intrinsic spin current for an arbitrary Hamiltonian and scattering potential

2005-10-31

arxiv.org/abs/cond-mat/0510815v2

PRB73, 115323 (2006).

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

LaTeX, 6 pages, 1 fig., Eqs.22,28 are corrected

Scientific paper

10.1103/PhysRevB.73.115323

We have described electron spin dynamics in the presence of the spin-orbit interaction and disorder using the spin-density matrix method. Exact solution is obtained for an arbitrary 2D spin-orbit Hamiltonian and arbitrary smoothness of the disorder potential. Spin current depends explicitely on the disorder properties, namely the smoothness of the disorder potential, even in the ballistic limit when broadening by scattering is much smaller than the spin-orbit related splitting of the energy spectrum. In this sense universal intrinsic spin current does not exist.

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