Transport properties of new high-Tcsuperconductors Ln2-x+yCexBa2-yCu3O10-δ(Ln=Nd, Eu)

Tsuyoshi Tamegai; Yasuhiro Iye; Masahisa Ogata; Kazuhiko Obara; Jun Akimitsu

doi:10.1143/JJAP.28.L1537

Transport properties of new high-T_csuperconductors Ln_2-x+yCe_xBa_2-yCu₃O_10-δ(Ln=Nd, Eu)

Tsuyoshi Tamegai, Yasuhiro Iye, Masahisa Ogata, Kazuhiko Obara, Jun Akimitsu

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

6 Citations (Scopus)

Abstract

Transport properties were investigated for the new high-T_csuperconductors Ln_2-x+yCe_xBa_2-yCu₃O_10-δ(Ln=Nd, Eu) with T_cin the 30 K range. Hall coefficients for these compounds are positive, indicating a hole conduction and are slightly temperature dependent with a broad maximum around 120 K. Average hole number per copper ion in the Cu-O planes estimated from the Hall coefficient just above T_cis 0.09, which is considerably lower than that of 0.23 in YBa₂Cu₃O_7-y. This may be the reason why T_cin Ln_2-x+yCe_xBa_2-yCu₃O_10-δis as low as 30 K. If we adopt midpoints of the resistive transition as T_cin the magnetic field, the upper critical field at absolute zero for the europium compound is estimated as 22 Tesla.

Original language	English
Pages (from-to)	L1537-L1540
Journal	Japanese Journal of Applied Physics
Volume	28
Issue number	9 A
DOIs	https://doi.org/10.1143/JJAP.28.L1537
Publication status	Published - Sept 1 1989
Externally published	Yes

Keywords

CuO(Ln = Nd, Eu)
Hall coefficient
High-Tsuperconductor
LnCeBa
Upper critical field

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

Access to Document

10.1143/JJAP.28.L1537

Cite this

@article{cf17e91bf15545ac9d32822558009c07,

title = "Transport properties of new high-Tcsuperconductors Ln2-x+yCexBa2-yCu3O10-δ(Ln=Nd, Eu)",

abstract = "Transport properties were investigated for the new high-Tcsuperconductors Ln2-x+yCexBa2-yCu3O10-δ(Ln=Nd, Eu) with Tcin the 30 K range. Hall coefficients for these compounds are positive, indicating a hole conduction and are slightly temperature dependent with a broad maximum around 120 K. Average hole number per copper ion in the Cu-O planes estimated from the Hall coefficient just above Tcis 0.09, which is considerably lower than that of 0.23 in YBa2Cu3O7-y. This may be the reason why Tcin Ln2-x+yCexBa2-yCu3O10-δis as low as 30 K. If we adopt midpoints of the resistive transition as Tcin the magnetic field, the upper critical field at absolute zero for the europium compound is estimated as 22 Tesla.",

keywords = "CuO(Ln = Nd, Eu), Hall coefficient, High-Tsuperconductor, LnCeBa, Upper critical field",

author = "Tsuyoshi Tamegai and Yasuhiro Iye and Masahisa Ogata and Kazuhiko Obara and Jun Akimitsu",

year = "1989",

month = sep,

day = "1",

doi = "10.1143/JJAP.28.L1537",

language = "English",

volume = "28",

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journal = "Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes",

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TY - JOUR

T1 - Transport properties of new high-Tcsuperconductors Ln2-x+yCexBa2-yCu3O10-δ(Ln=Nd, Eu)

AU - Tamegai, Tsuyoshi

AU - Iye, Yasuhiro

AU - Ogata, Masahisa

AU - Obara, Kazuhiko

AU - Akimitsu, Jun

PY - 1989/9/1

Y1 - 1989/9/1

N2 - Transport properties were investigated for the new high-Tcsuperconductors Ln2-x+yCexBa2-yCu3O10-δ(Ln=Nd, Eu) with Tcin the 30 K range. Hall coefficients for these compounds are positive, indicating a hole conduction and are slightly temperature dependent with a broad maximum around 120 K. Average hole number per copper ion in the Cu-O planes estimated from the Hall coefficient just above Tcis 0.09, which is considerably lower than that of 0.23 in YBa2Cu3O7-y. This may be the reason why Tcin Ln2-x+yCexBa2-yCu3O10-δis as low as 30 K. If we adopt midpoints of the resistive transition as Tcin the magnetic field, the upper critical field at absolute zero for the europium compound is estimated as 22 Tesla.

AB - Transport properties were investigated for the new high-Tcsuperconductors Ln2-x+yCexBa2-yCu3O10-δ(Ln=Nd, Eu) with Tcin the 30 K range. Hall coefficients for these compounds are positive, indicating a hole conduction and are slightly temperature dependent with a broad maximum around 120 K. Average hole number per copper ion in the Cu-O planes estimated from the Hall coefficient just above Tcis 0.09, which is considerably lower than that of 0.23 in YBa2Cu3O7-y. This may be the reason why Tcin Ln2-x+yCexBa2-yCu3O10-δis as low as 30 K. If we adopt midpoints of the resistive transition as Tcin the magnetic field, the upper critical field at absolute zero for the europium compound is estimated as 22 Tesla.

KW - CuO(Ln = Nd, Eu)

KW - Hall coefficient

KW - High-Tsuperconductor

KW - LnCeBa

KW - Upper critical field

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