Anomalous pinning behavior in slightly-oxygen-deficient Ba2YCu3O7-δ

R. B. van Dover; L. F. Schneemeyer; R. J. Felder; J. V. Waszczak

doi:10.1016/0921-4534(92)90862-7

Anomalous pinning behavior in slightly-oxygen-deficient Ba₂YCu₃O_7-δ

R. B. van Dover, L. F. Schneemeyer, R. J. Felder, J. V. Waszczak

Chemistry and Biochemistry

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

4 Scopus citations

Abstract

Single crystals of Ba₂YCu₃O_7-δ were equilibrated at ∼400-500°C to obtain δ∼0.05-0.15, with T_c87-83 K, respectively. Despite the consequent increase in point defects, the field-broadened resistive transition (B|c) ofhe crystal with T_c∼83 K indicates a marked reduction in the pinning energy compared with the fully oxidized case. The c-axis coherence length, inferred from the fluctuation conductivity, does not change. We speculate that the pinning energy decrease is due to a decrease in coupling between superconducting CuO planes due to proximity-effect reduction of the order parameter on CuO chains.

Original language	English
Pages (from-to)	13-19
Number of pages	7
Journal	Physica C: Superconductivity and its applications
Volume	193
Issue number	1-2
DOIs	https://doi.org/10.1016/0921-4534(92)90862-7
State	Published - 1 Apr 1992

Access to Document

10.1016/0921-4534(92)90862-7

Cite this

@article{0a83ff3ec94643ff9d959ca61b630a72,

title = "Anomalous pinning behavior in slightly-oxygen-deficient Ba2YCu3O7-δ",

abstract = "Single crystals of Ba2YCu3O7-δ were equilibrated at ∼400-500°C to obtain δ∼0.05-0.15, with Tc87-83 K, respectively. Despite the consequent increase in point defects, the field-broadened resistive transition (B|c) ofhe crystal with Tc∼83 K indicates a marked reduction in the pinning energy compared with the fully oxidized case. The c-axis coherence length, inferred from the fluctuation conductivity, does not change. We speculate that the pinning energy decrease is due to a decrease in coupling between superconducting CuO planes due to proximity-effect reduction of the order parameter on CuO chains.",

author = "\{van Dover\}, \{R. B.\} and Schneemeyer, \{L. F.\} and Felder, \{R. J.\} and Waszczak, \{J. V.\}",

year = "1992",

month = apr,

day = "1",

doi = "10.1016/0921-4534(92)90862-7",

language = "English",

volume = "193",

pages = "13--19",

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

issn = "0921-4534",

publisher = "Elsevier B.V.",

number = "1-2",

}

TY - JOUR

T1 - Anomalous pinning behavior in slightly-oxygen-deficient Ba2YCu3O7-δ

AU - van Dover, R. B.

AU - Schneemeyer, L. F.

AU - Felder, R. J.

AU - Waszczak, J. V.

PY - 1992/4/1

Y1 - 1992/4/1

N2 - Single crystals of Ba2YCu3O7-δ were equilibrated at ∼400-500°C to obtain δ∼0.05-0.15, with Tc87-83 K, respectively. Despite the consequent increase in point defects, the field-broadened resistive transition (B|c) ofhe crystal with Tc∼83 K indicates a marked reduction in the pinning energy compared with the fully oxidized case. The c-axis coherence length, inferred from the fluctuation conductivity, does not change. We speculate that the pinning energy decrease is due to a decrease in coupling between superconducting CuO planes due to proximity-effect reduction of the order parameter on CuO chains.

AB - Single crystals of Ba2YCu3O7-δ were equilibrated at ∼400-500°C to obtain δ∼0.05-0.15, with Tc87-83 K, respectively. Despite the consequent increase in point defects, the field-broadened resistive transition (B|c) ofhe crystal with Tc∼83 K indicates a marked reduction in the pinning energy compared with the fully oxidized case. The c-axis coherence length, inferred from the fluctuation conductivity, does not change. We speculate that the pinning energy decrease is due to a decrease in coupling between superconducting CuO planes due to proximity-effect reduction of the order parameter on CuO chains.

UR - https://www.scopus.com/pages/publications/0026852072

U2 - 10.1016/0921-4534(92)90862-7

DO - 10.1016/0921-4534(92)90862-7

M3 - Article

AN - SCOPUS:0026852072

SN - 0921-4534

VL - 193

SP - 13

EP - 19

JO - Physica C: Superconductivity and its applications

JF - Physica C: Superconductivity and its applications

IS - 1-2

ER -

Anomalous pinning behavior in slightly-oxygen-deficient Ba₂YCu₃O_7-δ

Abstract

Access to Document

Other files and links

Fingerprint

Cite this