Superconductivity from a pseudogapped normal state: A mode-coupling approach to precursor superconductivity
Jiri Maly, Boldizsár Jankó, K. Levin
DOI 10.1103/PhysRevB.59.1354 · Physical Review B
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Abstract
We derive a phase diagram for the pseudogap onset temperature T* (associated with the breakdown of the Fermi-liquid state, due to strong pairing correlations) and the superconducting instability Tc as a function of variable pairing strength g. Our diagrammatic approach represents a systematic application of the pairing decoupling scheme of Kadanoff and Martin to arbitrary g and temperatures T>Tc. This self-consistent, conserving scheme reveals a delicate competition between the growth (with increasing g) of the pseudogap magnitude and that of Tc.
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