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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Official URL: http://prb.aps.org/abstract/PRB/v38/i7/p5095_1
Related URL: http://dx.doi.org/10.1103/PhysRevB.38.5095
Abstract
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 |
| Last Modified: | 25 Feb 2012 05:46 |
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