Flux flow resistivity in two-gap superconductor
Flux flow resistivity in two-gap superconductor
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DOI：
10.1143/jpsj.74.1394
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发表时间：
2005-05-01
影响因子：
1.7
通讯作者：
Matsukawa, H
中科院分区：
文献类型：
--
作者：
Goryo, J;Matsukawa, H
我们研究了双间隙超导体中的通量流动状态，其中两个不同幅度的横波间隙存在于两个单独的费米表面上。根据Bardeen-Stephen关系式得到了通量流电阻率，该结果与最近在双间隙超导体MgB2中观察到的流电阻率的反常场相关性非常吻合。还讨论了该系统中涡流的一些典型特性。
We investigate the flux flow state in a two-gap superconductor in which two s-wave gaps with different amplitudes exist on two separate Fermi surfaces. The flux flow resistivity is obtained on the basis of the Bardeen-Stephen relation and the result agrees well with the anomalous field dependence of the flow resistivity recently observed in the two-gap superconductor MgB2. Some typical properties of the vortex in this system are also discussed.