Physical review letters, 2004-07, Vol.93 (4), p.047001.1-047001.4, Article 047001
2004
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Details
- Autor(en) / Beteiligte
- Titel
- Strongly correlated superconductivity and pseudogap phase near a multiband Mott insulator
- Ist Teil von
- Physical review letters, 2004-07, Vol.93 (4), p.047001.1-047001.4, Article 047001
- Ort / Verlag
- Ridge, NY: American Physical Society
- Erscheinungsjahr
- 2004
- Quelle
- American Physical Society Journals
- Beschreibungen/Notizen
- 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.
- Sprache
- Englisch
- Identifikatoren
- ISSN: 0031-9007eISSN: 1079-7114DOI: 10.1103/physrevlett.93.047001Titel-ID: cdi_proquest_miscellaneous_66814595
- Format
- –
- Schlagworte
- Condensed matter: electronic structure, electrical, magnetic, and optical properties, Electronic structure, Exact sciences and technology, Nonconventional mechanisms (spin fluctuations, polaron and bipolaron theory, rvb theory, anyon mechanism, marginal fermi liquid, luttinger liquid, etc.), Physics, Properties of type I and type II superconductors, Superconductivity, Theory and models of superconducting state