Mechanism of pseudogap probed by a local impurity
Superconductivity
2009-11-07 v4
Abstract
The response to a local strong non-magnetic impurity in the pseudogap phase is examined in two distinctly different scenarios: phase-fluctuation (PF) of pairing field and d-density-wave (DDW) order. In the PF scenario, the resonance state is generally double-peaked near the Fermi level, and is abruptly broadened by vortex fluctuations slightly above the transition temperature. In the DDW scenario, the resonance is single-peaked and remains sharp up to gradual intrinsic thermal broadening, and the resonance energy is analytically determined to be at minus of the chemical potential.
Keywords
Cite
@article{arxiv.cond-mat/0106327,
title = {Mechanism of pseudogap probed by a local impurity},
author = {Qiang-Hua Wang},
journal= {arXiv preprint arXiv:cond-mat/0106327},
year = {2009}
}
Comments
4 pages, 2 figures