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On the Possibility of Experimental Verification of the Some Localization Theory Predictions

A. G. Groshev, S. G. Novokshonov

cond-mat.dis-nnarXiv:cond-mat/0205389

Abstract

The spatial non-locality (dispersion) of the transport equations results in a nonlinear dependence of the voltage drop U on the distance between the points of measuring. Therefore the results of the usual two-probe measurements of the conductivity depend essentially on the relation between the sample linear size L and the spatial dispersion scale R of the generalized diffusion coefficient D(q,ω). This makes it possible to get information on the character of the spatial non-locality of D(q,ω) in the Anderson localization regime and, in particular, on the correlation multifractal dimension D2 of the electron wave functions near the mobility edge.

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