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arXiv · 1105.4704

Triplet p-wave superconductivity in low-density extended Hubbard model with Coulomb repulsion

M. Yu. Kagan·D. V. Efremov·M. S. Marienko·V. V. Val'kov
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Abstract

We analyze superconducting instabilities in 3D and 2D extended Hubbard model with Coulomb repulsion between electrons on neighboring sites in the limit of low electron density ($n_{el} \rightarrow 0$) on simple cubic (square) lattice. We show that in a realistic strong-coupling case $U\gg V\gg W$ ($U$ and $V$ are the onsite and the intersite Coulomb repulsions, $W$ the bandwidth) the main SC instability corresponds to the p-wave pairing and in the leading order is correctly described by the equations obtained earlier in the absence of the intersite Coulomb interaction V=0.

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M. Yu. Kagan, D. V. Efremov, M. S. Marienko, V. V. Val'kov. 2011-05-24. Triplet p-wave superconductivity in low-density extended Hubbard model with Coulomb repulsion. https://doi.org/10.1134/s0021364011120083

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