Quantum critical transition from charge-ordered to superconducting state in the triangular lattice negative-U extended Hubbard model
arXiv:0802.1011 · doi:10.1103/PhysRevB.77.180515
Abstract
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.
4 pages, 6 EPS fig files
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- Quantum frustration in organic Mott insulators: from spin liquids to unconventional superconductors
- The Paired Electron Crystal: order from frustration in the quarter-filled band
- Absence of superconductivity in the half-filled band Hubbard model on the anisotropic triangular lattice
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- Absence of long-range superconducting correlations in the frustrated 1/2-filled band Hubbard model
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- Theory of metal-intercalated phenacenes: Why molecular valence 3 is special
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