Triplet <Emphasis Type="Italic">p</Emphasis>-wave superconductivity in the low-density extended hubbard model with Coulomb repulsion |
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| Authors: | M Yu Kagan D V Efremov M S Marienko V V Val’kov |
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| Institution: | 1.Kapitza Institute for Physical Problems,Russian Academy of Sciences,Moscow,Russia;2.Max-Planck-Institut für Festk?rperforschung,Stuttgart,Germany;3.Department of Physics and Astronomy,Hofstra University,Hempstead,USA;4.Kirensky Institute of Physics,Russian Academy of Sciences,Krasnoyarsk,Russia |
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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 → 0) on simple cubic (square) lattice. We show that in a realistic strong-coupling case U ≫ V ≫ W (U and V are the onsite and the intersite Coulomb repulsions, respectively, and 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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