Thermopower anisotropy of lightly-doped and optimally-doped Bi 2Sr2-xLaxCaCu2O 8+δ single crystals

T. Fujii, I. Terasaki, A. Matsuda

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

In-plane and out-of-plane thermopowers have been measured for lightly-doped (insulating) and optimally-doped (superconducting) Bi2Sr 2-xLaxCaCu2O8+δ single crystals. The anisotropy of the thermopower Sc/Sab is very large in the superconducting samples, while it is close to unity in the insulating ones. The thermopower of the insulating samples increases in proportion to T, suggesting that the localized carriers around at (π/2,π/2) cause the variable range hopping transport.

Original languageEnglish
Pages (from-to)674-676
Number of pages3
JournalPhysica C: Superconductivity and its applications
Volume408-410
Issue number1-4
DOIs
Publication statusPublished - 2004 Aug 1
EventProceedings of the International Conference on Materials - Rio de Janeiro, Brazil
Duration: 2003 May 252003 May 30

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Keywords

  • Anisotropy
  • Bi-2212
  • La substitution
  • Out-of-plane thermopower
  • Parent insulator

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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