Josephson plasma resonance as a structural probe of vortex liquid
Josephson plasma resonance as a structural probe of vortex liquid
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约瑟夫森等离子体共振作为涡流液体的结构探针
DOI：
10.1103/physrevlett.81.902
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发表时间：
1998
期刊：
影响因子：
--
通讯作者：
M. Maley
中科院分区：
文献类型：
--
作者：
L. Boulaevskii;A. Koshelev;M. Maley
约瑟夫森等离子体共振是近年来发展起来的一种探测涡旋相图不同区域层间约瑟夫森耦合的有力工具。在煎饼液体等离子体共振频率（ω）p（B，T）作为磁场B的函数，以前获得使用高温膨胀。我们进一步发展这种方法，并推导出一个一般的关系连接（ω）p（B）与密度相关函数的煎饼液体。该关系提供了一个独特的机会，提取定量信息的饼状液体在晶体中的c轴相关性与弱和强钉扎从等离子体共振的依赖性上的ab-分量的磁场在固定的c分量。我们讨论了弱无序晶体和辐照产生的柱状缺陷晶体中的c轴相关性。
Josephson plasma resonance has been introduced recently as a powerful tool to probe interlayer Josephson coupling in different regions of vortex phase diagram. In the pancake liquid plasma resonance frequency (omega) p(B,T) as function of the magnetic field B was obtained previously using the high temperature expansion. We further develop this approach and derive a general relation connecting (omega) p(B) with the density correlation function of pancake liquid. The relation provides unique opportunity to extract quantitative information on the c-axis correlations of pancake liquid in crystals with weak and strong pinning from the dependence of plasma resonance on the ab-component of magnetic field at fixed c component. We discuss c-axis correlations in crystals with weak disorder and crystals with columnar defects produced by irradiation.