Cooper-pairing interaction due to magnetic fluctuations near the spin-density-wave phase transition
Hanyou Chu, E. W. Fenton
DOI 10.1103/PhysRevB.42.6408 · Physical Review B
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Abstract
An attractive d-wave interaction occurs for Cooper pairing due to magnetic fluctuations associated with both sides of the spin-density-wave phase transition, in the Hubbard model for both square and bcc lattices. This pairing interaction is not enhanced by the antiferromagnetic background that occurs in the spin-density-wave (SDW) state. The problem of magnetic Umklapp processes in the interaction for the SDW state is dealt with by using a two-component electron field to represent the two sublattices of the antiferromagnetism. A Landau-Fermi liquid is assumed for the electrons and fluctuations are treated in the random-phase approximation (RPA). We also discuss the qualitative form of the theory beyond the RPA.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| (TMTSF)2X Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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