Flux profiles in Bi2Sr2CaCu2O8 crystals containing columnar defects

被引:5
作者
Konczykowski, M. [1 ]
Majer, D. [2 ]
Zeldov, E. [2 ]
Chikumoto, N. [1 ,3 ]
Vinokur, V. M. [4 ]
机构
[1] Ecole Polytech, Solides Irradies Lab, CEA, F-91128 Palaiseau, France
[2] Weizmann Inst Sci, IL-76100 Rehovot, Israel
[3] Univ Tokyo, Bunkyo Ku, Tokyo 113, Japan
[4] Argonne Natl Lab, Argonne, IL 60439 USA
来源
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 1994年 / 235-40卷
关键词
D O I
10.1016/0921-4534(94)91009-X
中图分类号
O59 [应用物理学];
学科分类号
摘要
The magnetic flux profiles in Bi2Sr2CaCu2O8 crystals containing columnar defects were measured using a Hall-sensor array placed on the sample surface. Double slope profiles with abrupt drop of persistent current J approximate to dB/dx above the matching field B-Phi were observed, in agreement with the predictions of the Bose-glass model (B-Phi is the field of complete filling of columnar defects by flux lines). Disapearence of this feature at 50-60K can be identified as crossing the depinning temperature T-dp.
引用
收藏
页码:2965 / 2966
页数:2
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