Pinning energy and irreversibility line in superconducting GdSr2RuCu2O8

被引：28

作者：

Attanasio, C

Salvato, M

Ciancio, R

Gombos, M

Pace, S

Uthayakumar, S

Vecchione, A

机构：

[1] Univ Salerno, Dipartimento Fis ER Caianiello, I-84081 Baronissi, Sa, Italy

[2] Univ Salerno, INFM, I-84081 Baronissi, Sa, Italy

[3] INFM, Unita Salerno, I-84081 Baronissi, Italy

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2004年 / 411卷 / 3-4期

关键词：

rutheno-cuprate materials; pinning energy;

D O I：

10.1016/j.physc.2004.07.004

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Transport properties of superconducting polycrystalline GdSr2RuCu2O8 have been studied by resistivity versus temperature measurements in external magnetic fields up to 8 T. The analysis of the experimental data shows that an activated pinning mechanism is present with low values of the pinning energy and that an irreversibility line (IL) can be identified as the limit of dissipation due to a two-dimensional (2D) vortex motion. Comparing these results with those commonly observed in the case of other high temperature superconductors, a similarity with the 2D vortex motion for BSCCO is observed. This fact has been discussed considering the possible role played by the magnetic Ru ions on the superconducting properties of the compound. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：126 / 135

页数：10

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