Document Type
Article
Publication Date
January 2011
Publication Title
Physical Review Letters
Volume
106
Issue Number
4
DOI
10.1103/PhysRevLett.106.047004
Keywords
Dynamical, Quantum, Proximity, Susceptibility, Optimal
Disciplines
Astrophysics and Astronomy | Physical Sciences and Mathematics | Physics
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.
Recommended Citation
S. Yang, H. Fotso, S.-Q. Su, D. Galanakis, Ehsan Khatami, J.-H. She, J. Moreno, J. Zaanen, and M. Jarrell. "Proximity of the Superconducting Dome and the Quantum Critical Point in the Two-Dimensional Hubbard Model" Physical Review Letters (2011). https://doi.org/10.1103/PhysRevLett.106.047004
Comments
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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