Journal
PHYSICAL REVIEW LETTERS
Volume 106, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.106.047004
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Funding
- NSF [DMR-0706379, OISE-0952300]
- DOE Office of Science [DE-AC05-00OR22725]
- Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO) via a Spinoza
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [0955980] Funding Source: National Science Foundation
- Office Of The Director
- Office Of Internatl Science &Engineering [952300] Funding Source: National Science Foundation
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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, T(c) may be enhanced through an increase in the d-wave pairing interaction (V(d)) or the bare pairing susceptibility (chi(0d)). At optimal doping, where Vd is revealed to be featureless, we find a power-law behavior of chi(0d)(omega = 0), replacing the BCS log, and strongly enhanced T(c). We suggest experiments to verify our predictions.
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