Nonlinear electron and spin transport in semiconductor superlattices

Bonilla, L. L.; Barletti, Luigi; Alvaro, M.

doi:10.1007/978-3-642-12110-4_16

Nonlinear charge transport in strongly coupled semiconductor super lattices is described by two-miniband Wigner-Poisson kinetic equations with BGK collision terms. The hyperbolic limit, in which the collision frequencies are of the same order as the Bloch frequencies due to the electric field, is investigated by means of the Chapman-Enskog perturbation technique, leading to nonlinear drift-diffusion equations for the two miniband populations. In the case of a lateral superlattice with spin-orbit interaction, the corresponding drift-diffusion equations are used to calculate spin-polarized currents and electron spin polarization.

Nonlinear electron and spin transport in semiconductor superlattices / L.L. Bonilla; L. Barletti; M. Alvaro. - STAMPA. - (2010), pp. 141-146. ((Intervento presentato al convegno ECMI 2008 tenutosi a Londra - University College nel 30 giugno - 4 luglio 2008 [10.1007/978-3-642-12110-4_16].

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Titolo:	Nonlinear electron and spin transport in semiconductor superlattices
Autori di Ateneo:	L. L. Bonilla BARLETTI, LUIGI M. Alvaro mostra contributor esterni nascondi contributor esterni
Autori:	L. L. Bonilla; BARLETTI, LUIGI; M. Alvaro
Data di pubblicazione:	2010
Titolo del libro:	PROGRESS IN INDUSTRIAL MATHEMATICS AT ECMI 2008
Titolo del congresso:	ECMI 2008
Luogo del congresso:	Londra - University College
Data del congresso:	30 giugno - 4 luglio 2008
Abstract:	Nonlinear charge transport in strongly coupled semiconductor super lattices is described by two-miniband Wigner-Poisson kinetic equations with BGK collision terms. The hyperbolic limit, in which the collision frequencies are of the same order as the Bloch frequencies due to the electric field, is investigated by means of the Chapman-Enskog perturbation technique, leading to nonlinear drift-diffusion equations for the two miniband populations. In the case of a lateral superlattice with spin-orbit interaction, the corresponding drift-diffusion equations are used to calculate spin-polarized currents and electron spin polarization.
Handle:	http://hdl.handle.net/2158/394313
Appare nelle tipologie:	4a - Articolo in atti di congresso

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