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; L. F. Schneemeyer; J. V. Waszczak

doi:10.1103/PhysRevB.38.7045

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, L. F. Schneemeyer, J. V. Waszczak

Chemistry and Biochemistry

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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 language	English
Pages (from-to)	7045-7048
Number of pages	4
Journal	Physical Review B
Volume	38
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevB.38.7045
State	Published - 1988

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

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.",

author = "Juang, {J. Y.} and Cutro, {J. A.} and Rudman, {D. A.} and {Van Dover}, {R. B.} and Schneemeyer, {L. F.} and Waszczak, {J. V.}",

year = "1988",

doi = "10.1103/PhysRevB.38.7045",

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journal = "Physical Review B",

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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, L. F.

AU - Waszczak, J. V.

PY - 1988

Y1 - 1988

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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DO - 10.1103/PhysRevB.38.7045

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JO - Physical Review B

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

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