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

doi:10.1016/0038-1098(93)90531-Q

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

^*此作品的通信作者

研究成果: 雜誌貢獻 › 期刊論文 › 同行評審

1 引文斯高帕斯（Scopus）

摘要

We have synthesized three superconducting compounds based on the Pb-1212 phase, namely (Pb_0.75Cu_0.25)Sr₂(Ca_0.5Y_0.5) Cu₂O_7-δ, (In_0.2Pb_0.55Cu_0.25)Sr₂(Ca_0.5Y_0.5)Cu₂O_7-δ and (Pb_0.75Cu_0.25)Sr₂(Ca_0.5Yb_0.5)Cu₂O_7-δ, having T_c'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 YBa₂Cu₃O_7-δ. Our proposal is that still higher T_c's may be possible if one can successfully introduce even greater concentrations of holes into the conducting CuO₂ plane.

原文	英語
頁（從 - 到）	31-34
頁數	4
期刊	Solid State Communications
卷	87
發行號	1
DOIs	https://doi.org/10.1016/0038-1098(93)90531-Q
出版狀態	已發佈 - 1993 7月
對外發佈	是

ASJC Scopus subject areas

化學 (全部)
凝聚態物理學
材料化學

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10.1016/0038-1098(93)90531-Q

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title = "Superconductivity in Pb-based 1212 cuprates; evidence for under-doping from thermoelectric power",

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.",

author = "Liu, {R. S.} and Obertelli, {S. D.} and Hu, {S. F.} and Edwards, {P. P.} and Jefferson, {D. A.}",

note = "Funding Information: AcRnowledgements-We thank the BICC plc, Fellowship of Engmeermg, BP and SERC for the support One of us (SFH) thankst he financial supportf rom the Trusteeso f the CambndgeO verseasT rust and the Gnton College",

year = "1993",

month = jul,

doi = "10.1016/0038-1098(93)90531-Q",

language = "English",

volume = "87",

pages = "31--34",

journal = "Solid State Communications",

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T1 - Superconductivity in Pb-based 1212 cuprates; evidence for under-doping from thermoelectric power

AU - Liu, R. S.

AU - Obertelli, S. D.

AU - Hu, S. F.

AU - Edwards, P. P.

AU - Jefferson, D. A.

N1 - Funding Information: AcRnowledgements-We thank the BICC plc, Fellowship of Engmeermg, BP and SERC for the support One of us (SFH) thankst he financial supportf rom the Trusteeso f the CambndgeO verseasT rust and the Gnton College

PY - 1993/7

Y1 - 1993/7

N2 - 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.

AB - 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.

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M3 - Article

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EP - 34

JO - Solid State Communications

JF - Solid State Communications

SN - 0038-1098

IS - 1

ER -

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

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