Quantum vortex fluctuations in cuprate superconductors
Superconductivity
2009-10-31 v2
Abstract
We study the effects of quantum vortex fluctuations in two-dimensional superconductors using a dual theory of vortices, and investigate the relevance to underdoped cuprates where the superconductor-insulator transition (SIT) is possibly driven by quantum vortex proliferation. We find that a broad enough phase fluctuation regime may exist for experimental observation of the quantum vortex fluctuations near SIT in underdoped cuprates. We propose that this scenario can be tested via pair-tunneling experiments which measure the characteristic resonances in the zero-temperature pair-field susceptibility in the vortex-proliferated insulating phase.
Cite
@article{arxiv.cond-mat/0010131,
title = {Quantum vortex fluctuations in cuprate superconductors},
author = {Hyok-Jon Kwon},
journal= {arXiv preprint arXiv:cond-mat/0010131},
year = {2009}
}
Comments
RevTex 5 pages, 2 eps figures; expanded; to appear in Phys. Rev. B