Angular dependence of the magnetic-field-induced resistive transition in single-crystal Bi2.2Sr2Ca0.8Cu2O8+

J. Y. Juang, J. A. Cutro, D. A. Rudman, R. B. Van Dover, Lynn Schneemeyer, J. V. Waszczak

Research output: Contribution to journalArticle

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Abstract

We report here detailed measurements of the angular and temperature dependence of the magnetic-field-induced resistive transition in single-crystal Bi2.2Sr2Ca0.8Cu2O8+α. Resistance is observed in the sample for small values of applied field (100 Oe) even at low current densities (< 10 A/cm2). This suggests that the resistive transition does not reflect the upper-critical field of the superconductor in a simple manner, but is complicated by flux-flow effects. Consequently, the angular dependence of the resistive transition cannot be fit by any standard model for anisotropic critical fields in superconductors. We find anistropic ratios as large as 50 for fields applied perpendicular and parallel to the c^ axis of the crystal, indicating large differences in the viscosity for flux motion in the two directions.

Original languageEnglish
Pages (from-to)7045-7048
Number of pages4
JournalPhysical Review B
Volume38
Issue number10
DOIs
StatePublished - 1 Jan 1988

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Superconducting materials
Single crystals
Magnetic fields
Fluxes
single crystals
magnetic fields
Current density
Viscosity
low currents
Crystals
viscosity
current density
temperature dependence
Temperature
crystals
Direction compound

Cite this

Juang, J. Y. ; Cutro, J. A. ; Rudman, D. A. ; Van Dover, R. B. ; Schneemeyer, Lynn ; Waszczak, J. V. / Angular dependence of the magnetic-field-induced resistive transition in single-crystal Bi2.2Sr2Ca0.8Cu2O8+. In: Physical Review B. 1988 ; Vol. 38, No. 10. pp. 7045-7048.
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abstract = "We report here detailed measurements of the angular and temperature dependence of the magnetic-field-induced resistive transition in single-crystal Bi2.2Sr2Ca0.8Cu2O8+α. Resistance is observed in the sample for small values of applied field (100 Oe) even at low current densities (< 10 A/cm2). This suggests that the resistive transition does not reflect the upper-critical field of the superconductor in a simple manner, but is complicated by flux-flow effects. Consequently, the angular dependence of the resistive transition cannot be fit by any standard model for anisotropic critical fields in superconductors. We find anistropic ratios as large as 50 for fields applied perpendicular and parallel to the c^ axis of the crystal, indicating large differences in the viscosity for flux motion in the two directions.",
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Angular dependence of the magnetic-field-induced resistive transition in single-crystal Bi2.2Sr2Ca0.8Cu2O8+. / Juang, J. Y.; Cutro, J. A.; Rudman, D. A.; Van Dover, R. B.; Schneemeyer, Lynn; Waszczak, J. V.

In: Physical Review B, Vol. 38, No. 10, 01.01.1988, p. 7045-7048.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Angular dependence of the magnetic-field-induced resistive transition in single-crystal Bi2.2Sr2Ca0.8Cu2O8+

AU - Juang, J. Y.

AU - Cutro, J. A.

AU - Rudman, D. A.

AU - Van Dover, R. B.

AU - Schneemeyer, Lynn

AU - Waszczak, J. V.

PY - 1988/1/1

Y1 - 1988/1/1

N2 - We report here detailed measurements of the angular and temperature dependence of the magnetic-field-induced resistive transition in single-crystal Bi2.2Sr2Ca0.8Cu2O8+α. Resistance is observed in the sample for small values of applied field (100 Oe) even at low current densities (< 10 A/cm2). This suggests that the resistive transition does not reflect the upper-critical field of the superconductor in a simple manner, but is complicated by flux-flow effects. Consequently, the angular dependence of the resistive transition cannot be fit by any standard model for anisotropic critical fields in superconductors. We find anistropic ratios as large as 50 for fields applied perpendicular and parallel to the c^ axis of the crystal, indicating large differences in the viscosity for flux motion in the two directions.

AB - We report here detailed measurements of the angular and temperature dependence of the magnetic-field-induced resistive transition in single-crystal Bi2.2Sr2Ca0.8Cu2O8+α. Resistance is observed in the sample for small values of applied field (100 Oe) even at low current densities (< 10 A/cm2). This suggests that the resistive transition does not reflect the upper-critical field of the superconductor in a simple manner, but is complicated by flux-flow effects. Consequently, the angular dependence of the resistive transition cannot be fit by any standard model for anisotropic critical fields in superconductors. We find anistropic ratios as large as 50 for fields applied perpendicular and parallel to the c^ axis of the crystal, indicating large differences in the viscosity for flux motion in the two directions.

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