Kinetic energy driven pairing
Strongly Correlated Electrons
2007-05-23 v1 Superconductivity
Abstract
Pairing occurs in conventional superconductors through a reduction of the electronic potential energy accompanied by an increase in kinetic energy, indicating that the transition is driven by a pairing potential. In the underdoped cuprates, optical experiments show that pairing is driven by a reduction of the electronic kinetic energy. Using the Dynamical Cluster Approximation we study the nature of superconductivity in a microscopic model of the cuprates, the two-dimensional Hubbard model. We find that pairing is indeed driven by the kinetic energy and that superconductivity evolves from an unconventional, spin-charge separated state, consistent with the RVB model of high-temperature superconductors.
Cite
@article{arxiv.cond-mat/0211298,
title = {Kinetic energy driven pairing},
author = {Th. A. Maier and M. Jarrell and A. Macridin and C. Slezak},
journal= {arXiv preprint arXiv:cond-mat/0211298},
year = {2007}
}
Comments
5 pages, 4 figures