ISSN:
1434-6036
Schlagwort(e):
PACS. 72.10.-d Theory of electronic transport; scattering mechanisms – 72.15.Rn Localization effects (Anderson or weak localization)
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Physik
Notizen:
Abstract: We derive a formula for the quantum corrections to the electrical current for a metal out of equilibrium. In the limit of linear current-voltage characteristics our formula reproduces the well known Altshuler-Aronov correction to the conductivity of a disordered metal. The current formula is obtained by a direct diagrammatic approach, and is shown to agree with what is obtained within the Keldysh formulation of the non-linear sigma model. As an application we calculate the current of a mesoscopic wire. We find a current-voltage characteristics that scales with eV/kT, and calculate the different scaling curves for a wire in the hot-electron regime and in the regime of full non-equilibrium.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/s10051-001-8706-1
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