Coherent transport in disordered metals out of equilibrium

被引：0

作者：

P. Schwab

R. Raimondi

机构：

[1] Institut für Physik,

[2] Universität Augsburg,undefined

[3] 86135 Augsburg,undefined

[4] Germany,undefined

[5] NEST-INFM e Dipartimento di Fisica “E. Amaldi”,undefined

[6] Università di Roma 3,undefined

[7] Via della Vasca Navale 84,undefined

[8] 00146 Roma,undefined

[9] Italy,undefined

来源：

The European Physical Journal B - Condensed Matter and Complex Systems | 2001年 / 24卷

关键词：

PACS. 72.10.-d Theory of electronic transport; scattering mechanisms – 72.15.Rn Localization effects (Anderson or weak localization);

D O I：

暂无

中图分类号：

学科分类号：

摘要：

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.

引用

页码：525 / 540

页数：15