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Optical response of electrons in a random potential

Alexander Weisse·Gerald Schubert·Holger Fehske
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Abstract

Using our recently developed Chebyshev expansion technique for finite-temperature dynamical correlation functions we numerically study the AC conductivity $σ(ω)$ of the Anderson model on large cubic clusters of up to $100^3$ sites. Extending previous results we focus on the role of the boundary conditions and check the consistency of the DC limit, $ω\to 0$, by comparing with direct conductance calculations based on a Greens function approach in a Landauer Büttiker type setup.

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Alexander Weisse, Gerald Schubert, Holger Fehske. 2004-08-12. Optical response of electrons in a random potential. https://doi.org/10.1016/j.physb.2005.01.227

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