Evidence for two-component high-temperature superconductivity in the femtosecond optical response of YBa2Cu3O7-delta
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...
| Hauptverfasser: | , , , , , , , |
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| Format: | Journal article |
| Sprache: | English |
| Veröffentlicht: |
1997
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| _version_ | 1826267892529758208 |
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| author | Stevens, C Smith, D Chen, C Ryan, J Podobnik, B Mihailovic, D Wagner, G Evetts, J |
| author_facet | Stevens, C Smith, D Chen, C Ryan, J Podobnik, B Mihailovic, D Wagner, G Evetts, J |
| author_sort | Stevens, C |
| collection | OXFORD |
| description | 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 latter shows activated behavior below T c with an activation energy 2Δ 0 ≈ 3.5kT c. |
| first_indexed | 2024-03-06T21:01:13Z |
| format | Journal article |
| id | oxford-uuid:3af0c7a9-f6c5-4c4e-a9e8-aff337a45dd0 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T21:01:13Z |
| publishDate | 1997 |
| record_format | dspace |
| spelling | oxford-uuid:3af0c7a9-f6c5-4c4e-a9e8-aff337a45dd02022-03-26T14:04:40ZEvidence for two-component high-temperature superconductivity in the femtosecond optical response of YBa2Cu3O7-deltaJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:3af0c7a9-f6c5-4c4e-a9e8-aff337a45dd0EnglishSymplectic Elements at Oxford1997Stevens, CSmith, DChen, CRyan, JPodobnik, BMihailovic, DWagner, GEvetts, JFemtosecond 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 latter shows activated behavior below T c with an activation energy 2Δ 0 ≈ 3.5kT c. |
| spellingShingle | Stevens, C Smith, D Chen, C Ryan, J Podobnik, B Mihailovic, D Wagner, G Evetts, J Evidence for two-component high-temperature superconductivity in the femtosecond optical response of YBa2Cu3O7-delta |
| title | Evidence for two-component high-temperature superconductivity in the femtosecond optical response of YBa2Cu3O7-delta |
| title_full | Evidence for two-component high-temperature superconductivity in the femtosecond optical response of YBa2Cu3O7-delta |
| title_fullStr | Evidence for two-component high-temperature superconductivity in the femtosecond optical response of YBa2Cu3O7-delta |
| title_full_unstemmed | Evidence for two-component high-temperature superconductivity in the femtosecond optical response of YBa2Cu3O7-delta |
| title_short | Evidence for two-component high-temperature superconductivity in the femtosecond optical response of YBa2Cu3O7-delta |
| title_sort | evidence for two component high temperature superconductivity in the femtosecond optical response of yba2cu3o7 delta |
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