Proximity of the superconducting dome and the quantum critical point in the two-dimensional Hubbard model

S. X. Yang; H. Fotso; S. Q. Su; D. Galanakis; E. Khatami; J. H. She; J. Moreno; J. Zaanen; M. Jarrell

doi:10.1103/PhysRevLett.106.047004

Proximity of the superconducting dome and the quantum critical point in the two-dimensional Hubbard model

S. X. Yang
, H. Fotso
, S. Q. Su
, D. Galanakis
, E. Khatami
, J. H. She
, J. Moreno
, J. Zaanen
, M. Jarrell

Physics

Louisiana State University
Oak Ridge National Laboratory
Georgetown University
Leiden University

Research output: Contribution to journal › Article › peer-review

50 Scopus citations

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, T_c may be enhanced through an increase in the d-wave pairing interaction (V_d) or the bare pairing susceptibility (χ_0d). At optimal doping, where V_d is revealed to be featureless, we find a power-law behavior of χ _0d(ω=0), replacing the BCS log, and strongly enhanced T _c. We suggest experiments to verify our predictions.

Original language	English
Article number	047004
Journal	Physical Review Letters
Volume	106
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevLett.106.047004
State	Published - Jan 26 2011

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10.1103/PhysRevLett.106.047004

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title = "Proximity of the superconducting dome and the quantum critical point in the two-dimensional Hubbard model",

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 χ 0d(ω=0), replacing the BCS log, and strongly enhanced T c. We suggest experiments to verify our predictions.",

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AU - Yang, S. X.

AU - Fotso, H.

AU - Su, S. Q.

AU - Galanakis, D.

AU - Khatami, E.

AU - She, J. H.

AU - Moreno, J.

AU - Zaanen, J.

AU - Jarrell, M.

PY - 2011/1/26

Y1 - 2011/1/26

N2 - 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 χ 0d(ω=0), replacing the BCS log, and strongly enhanced T c. We suggest experiments to verify our predictions.

AB - 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 χ 0d(ω=0), replacing the BCS log, and strongly enhanced T c. We suggest experiments to verify our predictions.

UR - https://www.scopus.com/pages/publications/79251523517

U2 - 10.1103/PhysRevLett.106.047004

DO - 10.1103/PhysRevLett.106.047004

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VL - 106

JO - Physical Review Letters

JF - Physical Review Letters

IS - 4

M1 - 047004

ER -

Proximity of the superconducting dome and the quantum critical point in the two-dimensional Hubbard model

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