Mirror nesting: A superconducting pairing of carriers with a large momentum |
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Authors: | V I Belyavsky V V Kapaev Yu V Kopaev |
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Institution: | (1) Voronezh State Pedagogical University, ul. Lenina 86, Voronezh, 394043, Russia;(2) Lebedev Physical Institute, Russian Academy of Sciences, Leninskii pr. 53, Moscow, 119991, Russia |
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Abstract: | The coincidence of Fermi contour portions with isolines of zero kinetic energy of the relative pair motion (the pair Fermi contour) is a necessary condition for superconducting pairing of carriers with a large total pair momentum. In high?T c cuprates, this situation can occur either due to the formation of a stripe structure or in the absence of the stripe structure when the Fermi contour satisfies the mirror nesting condition. A gradual deviation from this condition leads to a decrease in the superconducting energy gap to zero. |
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