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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	31-34
Number of pages	4
Journal	Solid State Communications
Volume	87
Issue number	1
DOIs	https://doi.org/10.1016/0038-1098(93)90531-Q
Publication status	Published - 1993 Jul
Externally published	Yes

ASJC Scopus subject areas

General Chemistry
Condensed Matter Physics
Materials Chemistry

Access to Document

10.1016/0038-1098(93)90531-Q

Cite this

@article{98fc30c1119f4b1a8b287b506d83fa50,

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",

issn = "0038-1098",

publisher = "Elsevier Limited",

number = "1",

}

TY - JOUR

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.

UR - https://www.scopus.com/pages/publications/0027626087

UR - https://www.scopus.com/pages/publications/0027626087#tab=citedBy

U2 - 10.1016/0038-1098(93)90531-Q

DO - 10.1016/0038-1098(93)90531-Q

M3 - Article

AN - SCOPUS:0027626087

SN - 0038-1098

VL - 87

SP - 31

EP - 34

JO - Solid State Communications

JF - Solid State Communications

IS - 1

ER -

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

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this