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Electronic transport in a one-dimensional random array of scatterers

V S Filinov1, P Thomas2, I Varga3, T Meier2, M Bonitz4, V E Fortov1 and S W Koch2

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The quantum dynamics of an ensemble of interacting electrons in an array of random scatterers is treated using a new numerical approach for the calculation of average values of quantum operators and time correlation functions in the Wigner representation. This approach combines both molecular dynamics and Monte Carlo methods and computes numerical traces and spectra of the relevant dynamical quantities such as momentum–momentum correlation functions and spatial dispersions. Considering, as an application, a system with fixed scatterers, the results clearly demonstrate that the many-particle interaction between the electrons can lead to an enhancement of the conductivity at intermediate densities.


PACS

61.43.Bn Structural modeling: serial-addition models, computer simulation

72.15.Rn Localization effects (Anderson or weak localization)

MSC

65C05 Monte Carlo methods

82C80 Numerical methods (Monte Carlo, series resummation, etc.)

Subjects

Condensed matter: electrical, magnetic and optical

Condensed matter: structural, mechanical & thermal

Dates

Issue 22 (6 June 2003)

Received 16 December 2002, in final form 13 February 2003

Published 22 May 2003



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