Thermoelectric transport in epitaxial graphene on a size-quantized substrate

Abstract

Thermoelectric transport in epitaxial graphene formed on the surface of size quantized metal and semiconductor films is studied within a simple analytical model. The conductivity and thermopower of epi taxial graphene are studied. It is shown that such a system exhibits conductivity kinks and thermopower peaks (several times higher than in the case of isolated graphene). A comparison with cases of two dimensional and three dimensional substrates is performed.