期刊
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
卷 22, 期 16, 页码 2529-2536出版社
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0217979208039794
关键词
electronic properties of graphene; Kubo formula; minimal conductivity
We calculate the conductivity of a clean graphene sheet at finite temperatures starting from the tight-binding model. We obtain a finite value for the dc-conductivity at zero temperature. For finite temperature, the spontaneous electron-hole creation, responsible for the finite conductivity at zero temperature, is washed out and the dc-conductivity yields zero. Our results are in agreement with calculations based on the field-theoretical model for graphene.
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