Superconductivity and Pairing Fluctuations in the Half-Filled Two-Dimensional Hubbard Model

Details Superconductivity and Pairing Fluctuations in the Half-Filled Two-Dimensional Hubbard Model Superconductivity and Pairing Fluctuations in the Half-Filled Two-Dimensional Hubbard Model

2011-02-09

arxiv.org/abs/1102.1911v3

Phys. Rev. Lett. 107, 126401 (2011)

Physics

Condensed Matter

Strongly Correlated Electrons

4.3 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.107.126401

The two-dimensional Hubbard model exhibits superconductivity with d-wave symmetry even at half-filling in the presence of next-nearest neighbor hopping. Using plaquette cluster dynamical mean-field theory with a continuous-time quantum Monte Carlo impurity solver, we reveal the non-Fermi liquid character of the metallic phase in proximity to the superconducting state. Specifically, the low-frequency scattering rate for momenta near (\pi, 0) varies non-monotonously at low temperatures, and the dc conductivity is T-linear at elevated temperatures with an upturn upon cooling. Evidence is provided that pairing fluctuations dominate the normal-conducting state even considerably above the superconducting transition temperature.

Affiliated with

Also associated with

No associations

Rating

Superconductivity and Pairing Fluctuations in the Half-Filled Two-Dimensional Hubbard Model does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Superconductivity and Pairing Fluctuations in the Half-Filled Two-Dimensional Hubbard Model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Superconductivity and Pairing Fluctuations in the Half-Filled Two-Dimensional Hubbard Model will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-650451