Napredna pretraga

Pregled bibliografske jedinice broj: 373892

Enhancement of thermal transport in the degenerate periodic Anderson model


Zlatić, Veljko; Monnier, Rene; Freericks, Jim
Enhancement of thermal transport in the degenerate periodic Anderson model // Physical Review B - Condensed Matter and Materials Physics, 78 (2008), 4; 045113-1 doi:10.1103/PhysRevB.78.045113 (međunarodna recenzija, članak, znanstveni)


Naslov
Enhancement of thermal transport in the degenerate periodic Anderson model

Autori
Zlatić, Veljko ; Monnier, Rene ; Freericks, Jim

Izvornik
Physical Review B - Condensed Matter and Materials Physics (1098-0121) 78 (2008), 4; 045113-1

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Strong correlations; enhanced thermal transport

Sažetak
The low-temperature transport coefficients of the degenerate periodic SU(N) Anderson model are calculated in the limit of infinite correlation between f electrons, within the framework of dynamical mean-field theory. We establish the Fermi-liquid (FL) laws in the clean limit, taking into account the quasiparticle damping. The latter yields a reduced value of the Lorenz number in the Wiedemann-Franz law. Our results indicate that the renormalization of the thermal conductivity and of the Seebeck coefficient can lead to a substantial enhancement of the electronic thermoelectric figure of merit at low temperature. Using the FL laws, we discuss the low-temperature anomalies that show up in the electrical resistance of the intermetallic compounds with cerium and ytterbium ions when studied as a function of pressure. Our calculations explain the sharp maximum of the coefficient of the T2 term of the electrical resistance and the rapid variation in residual resistance found in a number of Ce and Yb intermetallics at some critical pressure.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekt / tema
035-0352843-2849 - Termoelektrična i termomagnetska svojstva materijala s jakim korelacijama. (Veljko Zlatić, )

Ustanove
Institut za fiziku, Zagreb

Autor s matičnim brojem:
Veljko Zlatić, (54915)

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


Citati