Unconventional high-temperature superconductivity from repulsive interactions: theoretical constraints |
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Authors: | Alexandrov A S Kabanov V V |
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Institution: | Department of Physics, Loughborough University, Loughborough LE11 3TU, United Kingdom. |
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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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