Naslov
Thermal transport of a delta-doped multilayer with strongly correlated electrons

Autori
Zlatić, Veljko ; Freericks, Jim, K.

Vrsta, podvrsta i kategorija rada
Poglavlja u knjigama, znanstveni

Knjiga
New materials for thermoelectric applications : theory and experiment

Urednik/ci
Zlatić, Veljko ; Hewson, Alex

Izdavač
Springer

Grad
Dordrecht

Godina
2013

Raspon stranica
93-114

ISBN
978-94-007-4986-3

Ključne riječi
figure of merit, Falicov-Kimball model

Sažetak
We show how a lightly doped Mott insulator has hugely enhanced electronic thermal transport at low temperature. It displays universal behavior independent of the interaction strength when the carriers can be treated as nondegenerate fermions and a nonuniversal ``crossover'' region where the Lorenz number grows to large values, while still maintaining a large thermoelectric figure-of-merit. The electron dynamics are described by the Falicov-Kimball model which is solved for arbitrary large on-site correlation with a dynamical mean-field theory algorithm on a Bethe lattice. We show how these results are generic for lightly doped Mott insulators as long as the renormalized Fermi liquid scale is pushed to very low temperature and the system is not magnetically ordered.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA