Composite spin and orbital triplet superconductivity

Details Composite spin and orbital triplet superconductivity Composite spin and orbital triplet superconductivity

2002-07-24

arxiv.org/abs/cond-mat/0207576v1

Acta Physica Polonica B, conference proceedings of SCES2002

Physics

Condensed Matter

Strongly Correlated Electrons

3 pages, 1 figure

Scientific paper

We show that the two-channel Anderson lattice model leads to the development of an unconventional superconductivity out of a metallic non Fermi-liquid phase. 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 neighbour form factor. The superconducting transition temperature is band filling dependent and peaks for half filling in the extrem intermediate valence regime and vanishes at integral valence. The gap function is non analytic and odd in frequency, and a pseudo-gap develops in the conduction electron density of states which vanishes as |omega| close to omega=0.

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