Pairing dynamics in strongly correlated superconductivity
Abstract
Confirmation of the phononic origin of Cooper pair formation in superconductors came with the demonstration that the interaction was retarded and that the corresponding energy scales were associated with phonons. Using cellular dynamical mean-field theory for the two-dimensional Hubbard model, we identify such retardation effects in d-wave pairing and associate the corresponding energy scales with short-range spin fluctuations. We find which frequencies are relevant for pairing as a function of interaction strength and doping and show that the disappearance of superconductivity on the overdoped side coincides with the disappearance of the low energy feature in the antiferromagnetic fluctuations, as observed in neutron scattering experiments.
Cite
@article{arxiv.0812.1228,
title = {Pairing dynamics in strongly correlated superconductivity},
author = {B. Kyung and D. Sénéchal and A. -M. S. Tremblay},
journal= {arXiv preprint arXiv:0812.1228},
year = {2010}
}
Comments
LaTeX, 8 pages, 8 figures