Composite spin and orbital triplet superconductivity formed out of a non-Fermi-liquid phase

被引:15
作者
Anders, FB [1 ]
机构
[1] Tech Univ Darmstadt, Inst Festkorperphys, D-64289 Darmstadt, Germany
关键词
D O I
10.1103/PhysRevB.66.020504
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
An unconventional superconducting phase is explored, which develops out of a non-Fermi-liquid phase of the two-channel Anderson-lattice model. It is characterized by a composite order parameter comprising of a local spin or orbital degree of freedom bound to triplet Cooper pairs with an isotropic and a nearest-neighbor form factor. The superconducting transition temperature peaks in the moderate intermediate valence regime and vanishes at integral valence. The gap function is nonanalytic and odd in frequency, and a pseudogap develops in the conduction-electron density of states which vanishes as \omega\ close to omega=0.
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页码:1 / 4
页数:4
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