Recoupling of Decoupled Vortex Liquid by Columnar Defects in Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{ital y}}
Recoupling of Decoupled Vortex Liquid by Columnar Defects in Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{ital y}}
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Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8 {ital y}}中柱状缺陷对解耦涡流液体的再耦合
DOI：
10.1103/physrevlett.79.3759
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发表时间：
1997
影响因子：
8.6
通讯作者：
M. Konczykowski
中科院分区：
文献类型：
--
作者：
M. Sato;T. Shibauchi;S. Ooi;T. Tamegai;M. Konczykowski
我们使用约瑟夫森等离子体共振作为探针，报告了柱状缺陷对 Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+y} 层间相位相干性的影响。在接近T{sub c}的涡流液相中，共振场(H{sub p})表现出与不可逆线类似的特征指数温度依赖性。 H{sub p} 的急剧增加发生在涡流液相中与频率相关的温度处。我们将这种变化解释为柱状缺陷引起的解耦涡流液体的场诱导重新耦合的表现。在此温度范围内观察到的双共振峰表明耦合和解耦涡旋区域的共存。 {版权} {ital 1997} {ital 美国物理学会}
We report on the effect of columnar defects on the interlayer phase coherence in Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+y} using Josephson plasma resonance as a probe. In the vortex liquid phase close to T{sub c}, the resonance field (H{sub p}) shows a characteristic exponential temperature dependence similar to that of the irreversibility line. A drastic increase in H{sub 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. {copyright} {ital 1997} {ital The American Physical Society}