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VOLUME 51 (1990) | ISSUE 1 |
PAGE 39
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Dielectric correlations and δ -type superconductivity in a system with Coulomb interaction
Gorbatsevich A. A.
A general expression has been derived for the effective potential of the Coulomb interaction between electrons in the superconducting channel, with allowance for the dielectric correlations in the weak-interaction limit. The conditions under which an s + id-type superconductivity can occur have been determined. A new state, which competes with the R VB phase in the strong-interaction limit, is discussed.
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