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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