Melting of the Abrikosov flux lattice in anisotropic superconductors.
Melting of the Abrikosov flux lattice in anisotropic superconductors.
复制标题
各向异性超导体中阿布里科索夫通量晶格的熔化。
DOI：
10.1103/physrevlett.68.1594
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发表时间：
1992
影响因子：
8.6
通讯作者：
Kogan
中科院分区：
文献类型：
--
作者：
Beck;Farrell;Rice;Ginsberg;Kogan
有人提出，在高{{ital T}}{次{ital c}}超导体中，Abrikosov通量晶格在相图的很大一部分上是熔化的。我们提供了一个热力学论证，证明了熔融温度的角依赖性是由超导质量各向异性控制的。利用低频扭振技术，这种关系已经在非双晶单晶YBa{sub 2}Cu{sub 3}O{sub 7{-}{delta}}中进行了测试。结果为熔融理论提供了决定性的支持。
It has been proposed that the Abrikosov flux lattice in high-{ital T}{sub {ital c}} superconductors is melted over a significant fraction of the phase diagram. We provide a thermodynamic argument which establishes that the angular dependence of the melting temperature is controlled by the superconducting mass anisotropy. Using a low-frequency torsional-oscillator technique, this relationship has been tested in untwinned single-crystal YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}}. The results offer decisive support for the melting proposal.