Effects of Zn substitution on the superconductivity and pseudogap in (formula presented) with various doping levels

Ayako Yamamoto, K. Minami, W. Z. Hu, A. Miyakita, M. Izumi, S. Tajima

研究成果: Article査読

抄録

A series of high-(formula presented) superconductors (formula presented) (Hg-1201, (formula presented) and 0.03) with various doping levels was synthesized, and the effects of Zn substitution on superconductivity and pseudogap were investigated on the basis of dc susceptibility, thermoelectric power, and electrical resistivity data. (formula presented) decreased with Zn substitution over a wide doping range, but most strongly at a heavily underdoped state, without any appreciable change in hole concentration irrespective of doping level. A disappearance of superconductivity or a sharp drop in (formula presented) by Zn substitution is not observed in the vicinity of (formula presented) which suggests no enhancement of charge/spin stripe order. Analyses of temperature dependence of Seebeck coefficient S and resistivity revealed that there is no clear change with Zn substitution in the characteristic temperature (formula presented) associated with the pseudogap, while the transport data are affected below (formula presented) by Zn substitution.

本文言語English
ページ(範囲)1-7
ページ数7
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
65
10
DOI
出版ステータスPublished - 2002 1 1
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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