title: Unconventional high-temperature superconductivity from repulsive interactions: theoretical constraints.
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.
authors.affiliation: Department of Physics, Loughborough University, Loughborough LE11 3TU, United Kingdom.
authors.forename: A S
authors.initials: AS
authors.lastname: Alexandrov
authors.forename: V V
authors.initials: VV
authors.lastname: Kabanov