Work

Thermoelectric effect in superlattices; applicability of coherent and incoherent transport models

Year: 2018

Type: article

Abstract: Calculations of thermoelectric transport coefficients including quantum effects are performed on superlattices using the Buttiker approximation. The results are compared to the Boltzmann transport equation with minibands present, and to an incoherent transport model. Comparisons are performed in the linear regime for the electrical conductivity, Seebeck and Lorenz coefficients. We show that at superlattice periods smaller than the typical electron mean free path, the former model and the calculations including quantum effects are in agreement. However, for longer superlattices the incoherent model is shown to be more correct.

Source: Computational Materials Science

DOI: 10.1016/j.commatsci.2018.05.044

Authors: Lars Musland, Espen Flage-Larsen

Institutions: University of Oslo, SINTEF Industry, University of Stavanger

Language: English

Topic: Advanced Thermoelectric Materials and Devices

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,290

Funder: Norges Forskningsråd