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The Kubo-type Formula for Conductivity of Spatially Inhomogeneous Systems

I. G. Lang·L. I. Korovin·S. T. Pavlov
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Abstract

The expressions for average densities of currents and charges induced by a weak electromagnetic field in spatially inhomogeneous systems are obtained. The case of finite temperatures is considered. It is shown that average values are separated into "basic" and "additional" parts. The former depends on electric fields, and the latter depends on derivatives of electric fields on coordinates. Semiconductor quantum wells, wires or dots may be considered as spatially inhomogeneous systems.

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I. G. Lang, L. I. Korovin, S. T. Pavlov. 2003-03-06. The Kubo-type Formula for Conductivity of Spatially Inhomogeneous Systems. https://arxiv.org/abs/cond-mat/0303120

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