Pairing due to the exchange of magnetic fluctuations in cuprate superconductors

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Abstract

The possibility for a superconducting instability due to the exchange of magnetic fluctuations is studied by means of low-density expansion. It is shown that if the magnetic fluctuations are centered at (π,π), they uniquely favor dx2-y2 superconductivity close to the magnetic instability no matter at which doping concentration this instability occurs. However, if the magnetic fluctuations are centered around the incommensurate (π(1-δ),π) point in the Brillouin zone, they tend to suppress any type of superconductivity.

Original languageEnglish (US)
Pages (from-to)5588-5592
Number of pages5
JournalPhysical Review B
Volume46
Issue number9
DOIs
StatePublished - 1992

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