Angular dependence of the magnetization curves and interlayer Josephson coupling in Bi2Sr2CaCu2O8

L. Klein, E.R. Yacoby, Y. Yeshurun, M. Konczykowski and K. Kishio

Physica A: Statistical Mechanics and its Applications, 1993, vol. 200, issue 1, 413-419

Abstract: Magnetization curves were measured for Bi2Sr2CaCu2O8 crystals which were irradiated with 5.8 GeV Pb ions along the c direction or at 45° with respect to it. Each ion produces continuous columnar that crosses the sample and yields a unidirectional pinning center. The density of the defects in the various samples ranges from 1010 to 2.5 X 1011 ions/cm2. In all the irradiated samples the width of the magnetization curves is found to be the largest for fields along the defects indicating that when the field is at other directions the vortices are tilted away from the defects. This manifests the important role of the Josephson coupling between the CuO2 planes. We also report on accelerated flux escape around zero magnetization and around zero field, particularly in samples with a high dose of irradiation.

Date: 1993
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:200:y:1993:i:1:p:413-419

DOI: 10.1016/0378-4371(93)90541-B

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