On Measuring Condensate Fraction in Superconductors
超导电性
2009-10-31 v2 强关联电子
摘要
An analysis of off-diagonal long-range order in superconductors shows that the spin-spin correlation function is significantly influenced by the order if the order parameter is anisotropic on a microscopic scale. Thus, magnetic neutron scattering can provide a direct measurement of the condensate fraction of a superconductor. It is also argued that recent measurements in high temperature superconductors come very close to achieving this goal.
引用
@article{arxiv.cond-mat/9908205,
title = {On Measuring Condensate Fraction in Superconductors},
author = {Sudip Chakravarty and Hae-Young Kee},
journal= {arXiv preprint arXiv:cond-mat/9908205},
year = {2009}
}
备注
4 pages, 1 eps figure, RevTex. A new possibility in the underdoped regime is added. Other corrections are minor