Restricted wiedemann-franz law and vanishing thermoelectric power in one-dimensional conductors

Marcelo A. Kuroda, Jean Pierre Leburton

Research output: Contribution to journalArticlepeer-review

Abstract

In one-dimensional conductors with linear E-k dispersion (Dirac systems), intra-branch thermalization is favored by elastic electron-electron interaction in contrast with electron systems with a nonlinear (parabolic) dispersion. We show that under external electric fields or thermal gradients, the carrier populations of different branches, treated as Fermi gases, have different temperatures as a consequence of self-consistent carrier-heat transport. Specifically, in the presence of elastic phonon scattering, the Wiedemann-Franz law is restricted to each branch with its specific temperature. In addition, thermoelectric power vanishes due to electron-hole symmetry, which is validated by experiment.

Original languageEnglish (US)
Article number256805
JournalPhysical review letters
Volume101
Issue number25
DOIs
StatePublished - Dec 15 2008

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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