Unconventional high-temperature superconductivity from repulsive interactions: theoretical constraints
classification
❄️ cond-mat.supr-con
cond-mat.str-el
keywords
high-temperaturerepulsivesuperconductivityunconventionalallowedconstraintscoopercoulomb
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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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