Elastic properties of CeRu2
Elastic properties of CeRu2
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CeRu2 的弹性性能
DOI：
10.1007/bf02397466
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发表时间：
1997
影响因子：
2
通讯作者：
Y. Ōnuki
中科院分区：
文献类型：
--
作者：
B. Wolf;C. Hinkel;S. Holtmeier;D. Wichert;I. Kouroudis;G. Bruls;B. Lüthi;M. Hedo;Y. Inada;E. Yamamoto;Y. Haga;Y. Ōnuki
我们给出了Laves相化合物CeRu2在正常态和超导态的超声测量数据。在6.1K到300K的超导转变温度范围内，我们用形变势耦合方法描述了弹性常数的温度依赖关系。超导态的弹性反常用热辅助磁通流(TAFF)模型来描述。这使我们能够构造包括涡旋动力学在内的详细的超导B-T相图，并解释峰值效应区域。特别是超声测量清楚地显示了正常态与超导性质之间的联系。它们表明，结构涨落对超导电性和涡旋动力学有很强的影响。
We present data of the elastic properties of the Laves phase compound CeRu2in the normal and superconducting state obtained from ultrasound measurements. In the temperature range between the superconducting transition temperature of 6.1 K and 300 K we used a deformation potential coupling approach to describe the temperature dependence of the elastic constants. The elastic anomalies in the superconducting state are characterised with the model of thermally assisted flux flow (TAFF). This enables us to construct a detailed superconducting B-T phase diagram including the vortex dynamics and interpret the peak effect region. Especially the ultrasonic measurements exhibit clearly the connection between the normal state and the superconducting properties. They show that structural fluctuations have strong effects on the superconductivity and on the vortex dynamics.