Effects of ferromagnetic fluctuations on the electric and thermal transport properties in NaxCoO2

Y. Yanagi, Y. Ono

Research output: Contribution to journalConference articlepeer-review

Abstract

We investigate the electronic states and the transport properties of the CoO2 plane in NaxCoO2 on the basis of the two-dimensional triangular lattice 11-band d-p model by using the fluctuation exchange approximation, where we consider the Coulomb interaction between the t2g electrons on a Co site. It is found that all of the effective mass of quasiparticles, the resistivity, the thermoelectric power and the uniform spin susceptibility increase with increasing x for x > 0.6. This implies that the ferromagnetic fluctuations play significant roles on determining the electronic states. These results are qualitatively consistent with the experiments.

Original languageEnglish
Article number012235
JournalJournal of Physics: Conference Series
Volume200
Issue numberSECTION 1
DOIs
Publication statusPublished - 2010

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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