Superconducting properties of single-crystal Bi2Sr2CaCu2O8+y

Lin, J. J. ; Benitez, E. L. ; Poon, S. J. ; Subramanian, M. A. ; Gopalakrishnan, J. ; Sleight, A. W. (1988) Superconducting properties of single-crystal Bi2Sr2CaCu2O8+y Physical Review B: Condensed Matter and Materials Physics, 38 (7). pp. 5095-5097. ISSN 1098-0121

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We have measured the Meissner (flux expulsion) effects, lower critical fields, Hc1, and magnetization curves in single-crystal Bi2Sr2CaCu2O8+y (idealized composition) in magnetic fields both parallel and perpendicular to the basal planes. We find that the Meissner flux expulsion fractions of these crystals are very large, reaching 57-74% (depending on field orientation) of that of an ideal superconductor. The lower critical fields are very small (≤100 G in the favorable orientation) and show a large anisotropy of 25. The magnetization critical current has also been determined to be ~6×104 A/cm2 at 7 K.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:84356
Deposited On:25 Feb 2012 05:46
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