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- Title
Fluctuation-induced pseudogap in high-temperature superconductors.
- Authors
Federici, F.; Varlamov, A. A.
- Abstract
We study the effect of fluctuations on the ac conductivity of a layered superconductor for c-axis electromagnetic wave polarization. The fluctuation contributions of different physical nature and sign (paraconductivity, Maki–Thompson anomalous contribution, one-electron density-of-states renormalization) are found to be suppressed by the external field at different characteristic frequencies (ωAL∼T-Tc, ωMT∼max{T-Tc,τφ-1}, ωDOS∼min{T,τ-1}). As a result, the appearance of a nonmonotonic frequency dependence (pseudogap) in the infrared optical conductivity of high-temperature superconductor is predicted. © 1996 American Institute of Physics.
- Subjects
SEMICONDUCTORS -- Fluctuations; HIGH temperature superconductors
- Publication
JETP Letters, 1996, Vol 64, Issue 6, p433
- ISSN
0021-3640
- Publication type
Article
- DOI
10.1134/1.567216