Superconducting fluctuation in Ba2[Y,Ln]Cu3O7 measured by magnetoresistance

Azusa Matsuda; Takao Ishii; Kyoichi Kinoshita; Tomoaki Yamada

doi:10.1016/0921-4534(89)91060-5

Superconducting fluctuation in Ba₂[Y,Ln]Cu₃O₇ measured by magnetoresistance

Azusa Matsuda^*, Takao Ishii, Kyoichi Kinoshita, Tomoaki Yamada

^*Corresponding author for this work

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

1 Citation (Scopus)

Abstract

Magnetoresistance of polycrystalline Ba₂YCu₃O₇ and Ba₂Y_1-xLn_xCu₃O₇ (Ln=Pr,Ho,Gd, or Eu) are measured from Tc to 230 K. All the samples show large positive magnetoresistance arising from superconducting fluctuation. The temperature dependence is well-described by the recently developed theory which includes the Zeeman contribution of the Maki-Thompson-term. in pure samples, the coherence lengths along the ab axis and c axis are 12 Å and 2 Å, respectively. The phase relaxation time is estimated to be 2×10^-13 sec at 100 K. Only Pr substitution shortens the phase relaxation time, indicating the pair breaking nature of the Pr ion.

Original language	English
Pages (from-to)	371-372
Number of pages	2
Journal	Physica C: Superconductivity and its applications
Volume	162-164
Issue number	PART 1
DOIs	https://doi.org/10.1016/0921-4534(89)91060-5
Publication status	Published - 1989 Dec
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

Access to Document

10.1016/0921-4534(89)91060-5

Cite this

@article{31a80281b4c04bb8a7fd2e42d073b3bf,

title = "Superconducting fluctuation in Ba2[Y,Ln]Cu3O7 measured by magnetoresistance",

abstract = "Magnetoresistance of polycrystalline Ba2YCu3O7 and Ba2Y1-xLnxCu3O7 (Ln=Pr,Ho,Gd, or Eu) are measured from Tc to 230 K. All the samples show large positive magnetoresistance arising from superconducting fluctuation. The temperature dependence is well-described by the recently developed theory which includes the Zeeman contribution of the Maki-Thompson-term. in pure samples, the coherence lengths along the ab axis and c axis are 12 {\AA} and 2 {\AA}, respectively. The phase relaxation time is estimated to be 2×10-13 sec at 100 K. Only Pr substitution shortens the phase relaxation time, indicating the pair breaking nature of the Pr ion.",

author = "Azusa Matsuda and Takao Ishii and Kyoichi Kinoshita and Tomoaki Yamada",

year = "1989",

month = dec,

doi = "10.1016/0921-4534(89)91060-5",

language = "English",

volume = "162-164",

pages = "371--372",

journal = "Physica C: Superconductivity and its Applications",

issn = "0921-4534",

publisher = "Elsevier",

number = "PART 1",

}

TY - JOUR

T1 - Superconducting fluctuation in Ba2[Y,Ln]Cu3O7 measured by magnetoresistance

AU - Matsuda, Azusa

AU - Ishii, Takao

AU - Kinoshita, Kyoichi

AU - Yamada, Tomoaki

PY - 1989/12

Y1 - 1989/12

N2 - Magnetoresistance of polycrystalline Ba2YCu3O7 and Ba2Y1-xLnxCu3O7 (Ln=Pr,Ho,Gd, or Eu) are measured from Tc to 230 K. All the samples show large positive magnetoresistance arising from superconducting fluctuation. The temperature dependence is well-described by the recently developed theory which includes the Zeeman contribution of the Maki-Thompson-term. in pure samples, the coherence lengths along the ab axis and c axis are 12 Å and 2 Å, respectively. The phase relaxation time is estimated to be 2×10-13 sec at 100 K. Only Pr substitution shortens the phase relaxation time, indicating the pair breaking nature of the Pr ion.

AB - Magnetoresistance of polycrystalline Ba2YCu3O7 and Ba2Y1-xLnxCu3O7 (Ln=Pr,Ho,Gd, or Eu) are measured from Tc to 230 K. All the samples show large positive magnetoresistance arising from superconducting fluctuation. The temperature dependence is well-described by the recently developed theory which includes the Zeeman contribution of the Maki-Thompson-term. in pure samples, the coherence lengths along the ab axis and c axis are 12 Å and 2 Å, respectively. The phase relaxation time is estimated to be 2×10-13 sec at 100 K. Only Pr substitution shortens the phase relaxation time, indicating the pair breaking nature of the Pr ion.

UR - http://www.scopus.com/inward/record.url?scp=0024903676&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0024903676&partnerID=8YFLogxK

U2 - 10.1016/0921-4534(89)91060-5

DO - 10.1016/0921-4534(89)91060-5

M3 - Article

AN - SCOPUS:0024903676

SN - 0921-4534

VL - 162-164

SP - 371

EP - 372

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

IS - PART 1

ER -

Superconducting fluctuation in Ba₂[Y,Ln]Cu₃O₇ measured by magnetoresistance

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this