Critical currents and thermally activated flux motion in high-temperature superconductors

T. T M Palstra; B. Batlogg; R. B. Van Dover; L. F. Schneemeyer; J. V. Waszczak

doi:10.1063/1.101474

Critical currents and thermally activated flux motion in high-temperature superconductors

T. T M Palstra^*, B. Batlogg, R. B. Van Dover, L. F. Schneemeyer, J. V. Waszczak

^*Corresponding author for this work

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Abstract

We have measured the resistance below T_c of single crystals of the high-temperature superconductors Ba₂YCu₃O₇ and Bi_2.2Sr₂Ca_0.8Cu₂O _8+δ in magnetic fields up to 12 T. The resistive transition of both compounds is dominated by intrinsic dissipation which is thermally activated, resulting in an exponential temperature dependence of the resistivity well below T_c. The dissipation is significantly larger and of different character in the Bi-Cu compound than in Ba₂YCu ₃O₇. The relation between the activated behavior and the depinning critical current is discussed.

Original language	English
Pages (from-to)	763-765
Number of pages	3
Journal	Applied physics letters
Volume	54
Issue number	8
DOIs	https://doi.org/10.1063/1.101474
Publication status	Published - 1 Dec 1989
Externally published	Yes

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Palstra1989criticalFinal published version, 511 KB

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title = "Critical currents and thermally activated flux motion in high-temperature superconductors",

abstract = "We have measured the resistance below Tc of single crystals of the high-temperature superconductors Ba2YCu3O7 and Bi2.2Sr2Ca0.8Cu2O 8+δ in magnetic fields up to 12 T. The resistive transition of both compounds is dominated by intrinsic dissipation which is thermally activated, resulting in an exponential temperature dependence of the resistivity well below Tc. The dissipation is significantly larger and of different character in the Bi-Cu compound than in Ba2YCu 3O7. The relation between the activated behavior and the depinning critical current is discussed.",

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AU - Palstra, T. T M

AU - Batlogg, B.

AU - Van Dover, R. B.

AU - Schneemeyer, L. F.

AU - Waszczak, J. V.

PY - 1989/12/1

Y1 - 1989/12/1

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AB - We have measured the resistance below Tc of single crystals of the high-temperature superconductors Ba2YCu3O7 and Bi2.2Sr2Ca0.8Cu2O 8+δ in magnetic fields up to 12 T. The resistive transition of both compounds is dominated by intrinsic dissipation which is thermally activated, resulting in an exponential temperature dependence of the resistivity well below Tc. The dissipation is significantly larger and of different character in the Bi-Cu compound than in Ba2YCu 3O7. The relation between the activated behavior and the depinning critical current is discussed.

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JO - Applied physics letters

JF - Applied physics letters

SN - 0003-6951

IS - 8

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Critical currents and thermally activated flux motion in high-temperature superconductors

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