- Abstract:
-
Femtosecond time-resolved spectrocopy has been used to investigate electronic excitations contributing to the superconducting gap function Δ(ω, T) in YBa 2Cu 3O 7-δ. The optical response is strongly peaked at 1.5 eV, and contains two distinct components: one with a characteristic relaxation time of ∼5 ps, whose amplitude displays a two-fluid-like temperature dependence, and a long-lived component (>10 ns) which is consistent with localized quasiparticle states at the Fermi energy. The latt...
Expand abstract - Publication status:
- Published
- Publisher copy:
- 10.1103/PhysRevLett.78.2212
-
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- Journal:
- PHYSICAL REVIEW LETTERS
- Volume:
- 78
- Issue:
- 11
- Pages:
- 2212-2215
- Publication date:
- 1997-03-17
- DOI:
- EISSN:
-
1079-7114
- ISSN:
-
0031-9007
- URN:
-
uuid:3af0c7a9-f6c5-4c4e-a9e8-aff337a45dd0
- Source identifiers:
-
16576
- Local pid:
- pubs:16576
- Language:
- English
- Copyright date:
- 1997
Journal article
Evidence for two-component high-temperature superconductivity in the femtosecond optical response of YBa2Cu3O7-delta
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