Scaling behavior of layered high-T-c superconductors with columnar defects

Braverman, G. M.; Gredeskul, S. A.; Avishai, Y.

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Scaling behavior of layered high-T-c superconductors with columnar defects

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Braverman, G. M.
Prof. Hans A. Weidenmüller, Emeriti, MPI for Nuclear Physics, Max Planck Society;

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Braverman, G. M., Gredeskul, S. A., & Avishai, Y. (2002). Scaling behavior of layered high-T-c superconductors with columnar defects. Physical Review B, 6505(5): 054512, pp. 054512-054512.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-83D4-A

Abstract

It was recently observed [van der Beek et al., Phys, Rev. B 54, R792 (1996)] that irradiated layered high-T-c superconductors subject to perpendicular magnetic field manifest two similar scaling behaviors corresponding to two different critical temperatures. We show that this phenomenon is explained within the framework of the Ginzburg-Landau theory. In the weak field region, the scaling function differs from that of a clean sample mainly because of the renormalization of the critical temperature, due to defects. In the strong field region, defects are effectively suppressed and the scaling function, as well as the critical temperature, are the same as in a clean superconductor, The theory presented here agrees quite satisfactory with experiment.