Low dimensional systems

Effect of van Hove singularities on thermoelectric properties of graphene

S. Yu. Davydov

Ioffe Institute, St. Petersburg, Russia

Abstract: Using the model density of states of free-standing graphene single-sheet graphene, it is shown that van Hove singularities cause divergences of the Seebeck coefficient and the thermoelectric power factor. The results obtained for free-standing graphene are generalized to the case of epitaxial (encapsulated) graphene. Numerical estimates are given for substrates (plates) representing SiC polytypes.

Keywords: electrical conductivity, Seebeck coefficient, thermoelectric power factor, epigraphen, SiC polytypes.

Received: 15.08.2023
Revised: 15.08.2023
Accepted: 20.08.2023

DOI: 10.61011/FTT.2023.11.56561.183

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