Strongly Correlated Superconductivity and Pseudogap Phase near a Multiband Mott Insulator

2004/01/31 by Massimo Capone, M. Capone, Michele Fabrizio +4 · 8 citations
Materials Science · Physics and Astronomy · #Magnetic and transport properties of perovskites and related materials #Physics of Superconductivity and Magnetism #Rare-earth and actinide compounds #cond-mat.str-el #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevlett.93.047001

published as Phys. Rev. Lett. 93, 047001 (2004) · 4 pages, 5 figures

arxiv created 2004/07/22 · openalex publication_date 2004/07/22 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Near a Mott transition, strong electron correlations may enhance Cooper pairing. This is demonstrated in the dynamical mean field theory solution of a twofold-orbital degenerate Hubbard model with an inverted on-site Hund rule exchange, favoring local spin-singlet configurations. Close to the Mott insulator (which here is a local version of a valence bond insulator) a pseudogap non-Fermi-liquid metal, a superconductor, and a normal metal appear, in striking similarity with the physics of cuprates. The strongly correlated s-wave superconducting state has a larger Drude weight than the corresponding normal state. The role of the impurity Kondo problem is underscored.

Citations

• Direct Transition between a Singlet Mott Insulator and a Superconductor
• Strongly Correlated Superconductivity

Cited by

• Dynamical behavior across the Mott transition of two bands with different bandwidths
• Competition betweend-wave superconductivity and antiferromagnetism in the two-dimensional Hubbard model
• Energetic balance of the superconducting transition across the BCS—Bose Einstein crossover in the attractive Hubbard model
• Pairing and superconductivity from weak to strong coupling in the attractive Hubbard model
• Relevance of phonon dynamics in strongly correlated systems coupled to phonons: Dynamical mean-field theory analysis
• La Universidad de Vigo y ARVI promueven el I Master en Economía y Gestión pesquera
• Strong-coupling solver for the quantum impurity model
• Electronic structure and molecular orientation of a Zn-tetra-phenyl porphyrin multilayer on Si(111)