Contribution of electronic structure to thermoelectric power in (Bi,Pb)2 (Sr,La)2 Cu O6+δ

Takeshi Kondo, Tsunehiro Takeuchi, Uichiro Mizutani, Takayoshi Yokoya, Syunsuke Tsuda, Shik Shin

Research output: Contribution to journalArticle

48 Citations (Scopus)

Abstract

The energy-momentum (ε-k) dispersion and the shape of the Fermi surface in the (Bi,Pb)2 (Sr,La)2 Cu O6+δ (Bi2201) superconductors with various hole concentrations were determined by the high resolution angle-resolved photoemission spectroscopy. On the basis of the ε-k dispersion thus obtained, temperature and hole-concentration dependence of the thermoelectric power S (T) was calculated within the framework of the Boltzmann transport theory. S (T) of the optimally and overdoped samples was quantitatively reproduced by the present calculation, strongly indicating that characteristics in S (T) of the high- Tc cuprates under the optimally to overdoped conditions is unambiguously caused by the band structure characterized by the van Hove singularity near the Fermi level.

Original languageEnglish
Article number024533
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume72
Issue number2
DOIs
Publication statusPublished - Jul 1 2005
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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