Retardation effects at low doping in the spin-bag mechanism of high-Tc superconductivity
Harold Steinacker, G. B. Arnold
DOI 10.1103/PhysRevB.46.3581 · Physical Review B
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Abstract
The effects of small doping on the interactions involved in the superconducting transition for the spin-bag mechanism are studied within the random-phase approximation. We find a low-energy peak in the effective attractive interaction between pairing quasiparticles. We elucidate the effects of retardation which derive from this peak. Eliashberg-like equations are derived for the self-energy functions of superconducting quasiparticles. We find that for a fairly large range of model parameters this low-energy peak can have a substantial influence upon the gap equation. We also find that the interaction which produces superconductivity is itself altered by the opening up of a superconducting energy gap, becoming stronger in the presence of the gap.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Sr2CaCu2O8 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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