Superconductivity in Pb-based 1212 cuprates; evidence for under-doping from thermoelectric power

R. S. Liu, S. D. Obertelli, S. F. Hu, P. P. Edwards, D. A. Jefferson

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We have synthesized three superconducting compounds based on the Pb-1212 phase, namely (Pb0.75Cu0.25)Sr2(Ca0.5Y0.5) Cu2O7-δ, (In0.2Pb0.55Cu0.25)Sr2(Ca0.5Y0.5)Cu2O7-δ and (Pb0.75Cu0.25)Sr2(Ca0.5Yb0.5)Cu2O7-δ, having Tc's of 40 K, 55 K and 60 K, respectively. From thermoelectric power measurements we conclude that these Pb-1212 based materials are located in the "underdoped" region compared to YBa2Cu3O7-δ. Our proposal is that still higher Tc's may be possible if one can successfully introduce even greater concentrations of holes into the conducting CuO2 plane.

Original languageEnglish
Pages (from-to)31-34
Number of pages4
JournalSolid State Communications
Volume87
Issue number1
DOIs
Publication statusPublished - 1993 Jul

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Thermoelectric power
Superconductivity
cuprates
proposals
superconductivity
Doping (additives)
conduction
barium copper yttrium oxide

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

Cite this

Superconductivity in Pb-based 1212 cuprates; evidence for under-doping from thermoelectric power. / Liu, R. S.; Obertelli, S. D.; Hu, S. F.; Edwards, P. P.; Jefferson, D. A.

In: Solid State Communications, Vol. 87, No. 1, 07.1993, p. 31-34.

Research output: Contribution to journalArticle

Liu, R. S. ; Obertelli, S. D. ; Hu, S. F. ; Edwards, P. P. ; Jefferson, D. A. / Superconductivity in Pb-based 1212 cuprates; evidence for under-doping from thermoelectric power. In: Solid State Communications. 1993 ; Vol. 87, No. 1. pp. 31-34.
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