Unconventional High-Temperature Superconductivity from Repulsive Interactions: Theoretical Constraints
A. S. Alexandrov, V. V. Kabanov
DOI 10.1103/PhysRevLett.106.136403 · Physical Review Letters
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Abstract
Unconventional symmetries of the order parameter allowed some researchers to maintain that a purely repulsive interaction between electrons provides superconductivity without phonons in a number of high-temperature superconductors. It is shown that the Cooper pairing in p and d states is not possible with the realistic Coulomb repulsion between fermions at relevant temperatures in any dimension.
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