On Mott’s formula for the ac-conductivity in the Anderson model
نویسندگان
چکیده
We study the ac-conductivity in linear response theory in the general framework of ergodic magnetic Schrödinger operators. For the Anderson model, if the Fermi energy lies in the localization regime, we prove that the ac-conductivity is bounded by Cν(log 1 ν ) at small frequencies ν. This is to be compared to Mott’s formula, which predicts the leading term to be Cν(log 1 ν ).
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