Recoupling of decoupled vortex liquid by columnar defects in Bi2Sr2CaCu2O8+y

被引：71

作者：

Sato, M ^{[1
]}

Shibauchi, T ^{[1
]}

Ooi, S ^{[1
]}

Tamegai, T ^{[1
]}

Konczykowski, M ^{[1
]}

机构：

[1] ECOLE POLYTECH,SOLIDES IRRADIES LAB,CNRS,URA 1380,F-91128 PALAISEAU,FRANCE

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 79卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.79.3759

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on the effect of columnar defects on the interlayer phase coherence in Bi2Sr2CaCu2O8+y using Josephson plasma resonance as a probe. In the vortex liquid phase close to T-c, the resonance field (H-p) shows a characteristic exponential temperature dependence similar to that of the irreversibility line. A drastic increase in H-p occurs at a frequency-dependent temperature in the vortex liquid phase. We interpret this change as a manifestation of field-induced recoupling of decoupled vortex liquid by columnar defects. The double resonance peaks observed in this temperature range indicate the coexistence of coupled and decoupled vortex regions. [S0031-9007(97)04419-0].

引用

页码：3759 / 3762

页数：4

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