Article
Proximity of the Superconducting Dome and the Quantum Critical Point in the Two-Dimensional Hubbard Model
Physical Review Letters
(2011)
Abstract
We use the dynamical cluster approximation to understand the proximity of the superconducting dome to the quantum critical point in the two-dimensional Hubbard model. In a BCS formalism, Tc may be enhanced through an increase in the d-wave pairing interaction (Vd) or the bare pairing susceptibility (χ0d). At optimal doping, where Vd is revealed to be featureless, we find a power-law behavior of χ0d(ω=0), replacing the BCS log, and strongly enhanced Tc. We suggest experiments to verify our predictions.
Keywords
- Dynamical,
- Quantum,
- Proximity,
- Susceptibility,
- Optimal
Disciplines
Publication Date
January, 2011
DOI
10.1103/PhysRevLett.106.047004
Publisher Statement
This article originally appeared in Physical Review Letters, volume 106, issue 4, 2011, published by the American Physical Society. ©2011 American Physical Society. The article can also be found online at this link.
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Citation Information
S. X. Yang, H. Fotso, S.-Q. Su, D. Galanakis, et al.. "Proximity of the Superconducting Dome and the Quantum Critical Point in the Two-Dimensional Hubbard Model" Physical Review Letters Vol. 106 Iss. 4 (2011) ISSN: 0031-9007 Available at: http://works.bepress.com/ehsan_khatami/13/