We consider a two-dimensional electron gas with a spin-orbit interaction of Bychkov and Rashba type. Starting from a microscopic model, represented by the von Neumann equation endowed with a suitable Bhatnagar–Gross–Krook collision term, we apply the Chapman–Enskog method to derive a quantum diffusive model. Such model is then semiclassically expanded up to second order, leading to nonlinear quantum corrections to the zero-order diffusive models of the literature.

Quantum drift-diffusion modeling of spin transport in nanostructures / Luigi Barletti; Florian Méhats. - In: JOURNAL OF MATHEMATICAL PHYSICS. - ISSN 0022-2488. - STAMPA. - 51:(2010), pp. 053304-1-053304-20. [10.1063/1.3380530]

Quantum drift-diffusion modeling of spin transport in nanostructures

BARLETTI, LUIGI;
2010

Abstract

We consider a two-dimensional electron gas with a spin-orbit interaction of Bychkov and Rashba type. Starting from a microscopic model, represented by the von Neumann equation endowed with a suitable Bhatnagar–Gross–Krook collision term, we apply the Chapman–Enskog method to derive a quantum diffusive model. Such model is then semiclassically expanded up to second order, leading to nonlinear quantum corrections to the zero-order diffusive models of the literature.
2010
51
053304-1
053304-20
Luigi Barletti; Florian Méhats
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/675585
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