Quantum critical transition from charge-ordered to superconducting state in the negative- U extended Hubbard model on a triangular lattice

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We demonstrate a robust frustration-driven charge order to superconductivity transition in the half-filled negative- U extended Hubbard model. Superconductivity extends over a broad region of the parameter space. We argue that the model provides the correct insight to understanding unconventional superconductivity in the organic charge-transfer solids and other quarter-filled systems.

Original languageEnglish (US)
Article number180515
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number18
Publication statusPublished - May 23 2008


ASJC Scopus subject areas

  • Condensed Matter Physics

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