Abstract
Motivated by the recent optical conductivity experiments on (formula presented) 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 (formula presented) it is shown that some spectral weight is removed from (formula presented) to finite frequencies and contribute to dissipation. A case where both (formula presented) and the local normal-fluid density are inhomogeneous is also considered. We find an enhanced dissipation at low frequency if the two variations are anticorrelated.
| Original language | English |
|---|---|
| Pages (from-to) | 1-4 |
| Number of pages | 4 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 66 |
| Issue number | 5 |
| DOIs | |
| State | Published - 2002 |
| Externally published | Yes |