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Defect-unbinding and the Bose-glass transition in layered superconductors

C. J. van der Beek·M. Konczykowski·A. V. Samoilov·N. Chikumoto·S. Bouffard·M. V. Feigel'man
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Abstract

The low-field Bose-glass transition temperature in heavy-ion irradiated Bi_2Sr_2CaCu_2O_8+d increases progressively with increasing density of irradiation-induced columnar defects, but saturates for densities in excess of 1.5 x10^9 cm^-2. The maximum Bose-glass temperature corresponds to that above which diffusion of two-dimensional pancake vortices between different vortex lines becomes possible, and above which the ``line-like'' character of vortices is lost. We develop a description of the Bose-glass line that is in excellent quantitative agreement with the experimental line obtained for widely different values of track density and material parameters.

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C. J. van der Beek, M. Konczykowski, A. V. Samoilov, N. Chikumoto, S. Bouffard, M. V. Feigel'man. 2000-03-17. Defect-unbinding and the Bose-glass transition in layered superconductors. https://doi.org/10.1103/physrevlett.86.5136

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