Three-dimensional superconductivity and vortex glass transition in La 1.87 Y 0.13 CuO 4

The angular dependence of the critical current density ( J c ( θ ) ) and the vortex glass transition temperature ( T g ( θ ) ) in La 1.87 Y 0.13 CuO 4 were measured at different fields and temperatures. Both J c ( θ ) and T g ( θ ) showed a strong angular variation, which is typical for anisotropic...

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Published inPhysica. B, Condensed matter Vol. 378; pp. 447 - 448
Main Authors Lee, Hyun-Sook, Kim, Heon-Jung, Kim, Hyun-Jung, Jung, Myung-Hwa, Jo, Younghun, Lee, Sung-Ik, Tsukada, Akio, Naito, Michio
Format Journal Article
LanguageEnglish
Published Elsevier B.V 2006
Subjects
Angular dependence
Critical current density
La-214
Vortex-glass state
74.78.Bz
74.25.Fy
La-214
Critical current density
Angular dependence
Vortex-glass state
74.72.Dn
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Summary:The angular dependence of the critical current density ( J c ( θ ) ) and the vortex glass transition temperature ( T g ( θ ) ) in La 1.87 Y 0.13 CuO 4 were measured at different fields and temperatures. Both J c ( θ ) and T g ( θ ) showed a strong angular variation, which is typical for anisotropic superconductors. The angular variation could be described by using the anisotropic three-dimensional Ginzburg–Landau theory. From our analysis, we were able to estimate the anisotropy ratio.
ISSN:0921-4526
1873-2135
DOI:10.1016/j.physb.2006.01.193