Exotic superconducting properties in the electron-hole-compensated heavy-fermion "Semimetal" URu2Si2
Exotic superconducting properties in the electron-hole-compensated heavy-fermion "Semimetal" URu2Si2
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DOI：
10.1103/physrevlett.99.116402
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发表时间：
2007-09-14
影响因子：
8.6
通讯作者：
Matsuda, Y.
中科院分区：
文献类型：
--
作者：
Kasahara, Y.;Iwasawa, T.;Matsuda, Y.
我们表明，超净晶体URu 2Si 2的电荷和热输运测量揭示了一些前所未有的超导性能。的独特性是最突出的特殊领域的热导率的依赖性，包括在H-C2的一阶过渡与熵流的减少。这是一个结果的多带超导补偿电子结构的隐藏秩序状态的这个系统。我们提供了强有力的证据，一种新型的非常规超导性与两个不同的差距，具有不同的节点拓扑结构。
We show that the charge and thermal transport measurements on ultraclean crystals of URu2Si2 reveal a number of unprecedented superconducting properties. The uniqueness is best highlighted by the peculiar field dependence of thermal conductivity including the first-order transition at H-c2 with a reduction of entropy flow. This is a consequence of multiband superconductivity with compensated electronic structure in the hidden order state of this system. We provide strong evidence for a new type of unconventional superconductivity with two distinct gaps having different nodal topology.