Thermoelectric power and resistivity of HgBa2CuO4+δ over a wide doping range

Ayako Yamamoto, Wei Zhi Hu, Setsuko Tajima

Research output: Contribution to journalArticle

61 Citations (Scopus)

Abstract

Thermoelectric power (TEP) and resistivity were systematically investigated for HgBa2CuO4+δ (Hg-1201) with various doping levels from high underdoping to slight overdoping. Polycrystalline Hg-1201 samples were carefully prepared from a mixture of HgO, BaO, and CuO. We paid particular attention to carbon impurity in the starting materials, resulting in a high-quality sample. This enabled us to measure reliable transport properties. Assuming one characteristic temperature T* for each doping level, both the TEP and the resistivity can be well scaled, as was reported in the other high- Tc superconductors. The doping dependence of T’s is in good agreement with that of spin gap temperatures determined by NMR as well as that of the pseudogap temperatures reported in some other high- Tc superconductors.

Original languageEnglish
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume63
Issue number2
DOIs
Publication statusPublished - 2001 Dec 14
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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