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

Ayako Yamamoto, W. Z. Hu, S. Tajima

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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
Article number024504
Pages (from-to)245041-245046
Number of pages6
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number2
Publication statusPublished - 2001
Externally publishedYes


ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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