First observation for a cuprate superconductor of fluctuation-induced diamagnetism well inside the finite-magnetic-field regime

被引：52
作者：
Carballeira, C
Mosqueira, J
Revcolevschi, A
Vidal, F [1 ]
机构：
[1] Univ Santiago de Compostela, Dept Fis Mat Condensada, E-15706 Santiago, Spain
[2] Univ Paris 11, Lab Chim Solides, F-91405 Orsay, France
[3] Consejo Super Invest Cient, LBTS, Unidad Asocida ICMM, Madrid, Spain
来源：
PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 14期
关键词：
D O I：
10.1103/PhysRevLett.84.3157
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
For the first time for a cuprate superconductor, measurements performed above T(c) in high quality grain aligned La(1.9)Sr(0.1)CuO(4) samples have allowed the observation of the thermal fluctuation induced diamagnetism well inside the finite-magnetic-field fluctuation regime. These results may be explained in terms of the Gaussian Ginzburg-Landau approach for layered superconductors, but only if the finite field contributions are estimated by taking off the short-wavelength fluctuations.
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页码：3157 / 3160
页数：4
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