Asymmetric field profile in Bose glass phase of irradiated YBa2Cu3O7-δ:: Loss of interlayer coherence around 1/3 of matching field

被引：19
作者：
Itaka, K
Shibauchi, T
Yasugaki, M
Tamegai, T
Okayasu, S
机构：
[1] Univ Tokyo, Dept Appl Phys, Bunkyo Ku, Tokyo 1138656, Japan
[2] JAERI, Tokai, Ibaraki 3191195, Japan
来源：
PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 22期
关键词：
D O I：
10.1103/PhysRevLett.86.5144
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Magneto-optical imaging in YBa2Cu3O7-delta with tilted columnar defects (CD's) shows an asymmetric critical-state held profile. The observed hysteretic shift of the profile ridge (trough) from the center of the sample is explained by in-plane magnetization originating from vortex alignment along CD's. The extracted ratio of the in-plane to out-of-plane magnetization component has a maximum at 1/5 of matching held (B-Phi) and disappears above B-psi/3, suggesting a reduction of interlayer coherence well below B-Phi in the Bose glass phase. Implications are discussed in comparison with the vortex liquid recoupling observed in irradiated Bi2Sr2CaCu2O8+gamma.
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收藏
页码：5144 / 5147
页数：4
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