Theory of ultrafast quasiparticle dynamics in high-temperature superconductors : the dependence on pump fluence
We present a theory for the time-resolved optical spectroscopy of high-temperature superconductors at high excitation densities with strongly anisotropic electron-phonon coupling. A signature of the strong coupling between the out-of-plane, out-of-phase O-buckling mode (B1g) and electronic states ne...
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| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
2013
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/95461 http://hdl.handle.net/10220/9304 |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | We present a theory for the time-resolved optical spectroscopy of high-temperature superconductors at high excitation densities with strongly anisotropic electron-phonon coupling. A signature of the strong coupling between the out-of-plane, out-of-phase O-buckling mode (B1g) and electronic states near the antinode is observed as a higher-energy peak in the time-resolved optical conductivity and Raman spectra, while no evidence of strong coupling between the in-plane Cu-O-breathing mode and nodal electronic states is observed. More interestingly, it is observed that under appropriate conditions of pump fluence, this signature exhibits a reentrant behavior with time delay, following the fate of the superconducting condensate. |
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