Low-Frequency Optical Conductivity in Inhomogeneous d-wave Superconductors
Superconductivity
2009-11-07 v1
Abstract
Motivated by the recent optical conductivity experiments on Bi_2Sr_2CaCu_2O_{8+delta} films, we examine the possible origin of low-frequency dissipation in the superconducting state. In the presence of spatial inhomogeneity of the local phase stiffness rho_s, it is shown that some spectral weight is removed from omega=0 to finite frequencies and contribute to dissipation. A case where both rho_s and the local normal fluid density are inhomogeneous is also considered. We find an enhanced dissipation at low frequency if the two variations are anti-correlated.
Cite
@article{arxiv.cond-mat/0206440,
title = {Low-Frequency Optical Conductivity in Inhomogeneous d-wave Superconductors},
author = {Jung Hoon Han},
journal= {arXiv preprint arXiv:cond-mat/0206440},
year = {2009}
}
Comments
To appear in Phys. Rev. B