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Cutoff of the vortex-glass behavior in Tl2Ba2CaCu2O8+δ superconducting thin films

B. Lundqvist, J. Larsson, A. Herting, Ö. Rapp, M. Andersson, Z. G. Ivanov, L.-G. Johansson

DOI 10.1103/PhysRevB.58.6580 · Physical Review B

T1

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Abstract

The vortex dynamics of a Tl2Ba2CaCu2O8+δ thin film has been measured by electrical resistivity and I−V characteristics. The temperature T*(B) defined from a vortex-glass analysis of the resistivity in the vortex liquid state using the Vogel-Fulcher relation is shown to be consistent with a vortex-glass-like scaling of the I−V characteristics in the high dissipation regime. Below T*, there is however a significant temperature range in which the flux creep does not vanish at low currents. This suggests that the transition into a glassy vortex state is cut off at some length scale.

Source-reported materials — not catalogue approval

FormulaReported Tc (K)Pressure (GPa)Type
Tl2Ba2CaCu2O8+δ

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108Pressure not reportedonset
Tl2Ba2CaCu2O8+δ

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Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.

105Pressure not reportedzero_resistance
Bi2.15Sr1.95CaCu2O8

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Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.

—Pressure not reportedunknown
YBa2Cu3O7

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Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.

—Pressure not reportedunknown

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