Metastable Photo-Induced Superconductivity far above $T_{\textrm{c}}$
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arXiv
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| Main Authors: | , , , , , , , , |
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| Format: | Preprint |
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2023
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| _version_ | 1866929486742683648 |
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| author | Chattopadhyay, Sambuddha Eckhardt, Christian J. Kennes, Dante M. Sentef, Michael A. Shin, Dongbin Rubio, Angel Cavalleri, Andrea Demler, Eugene A. Michael, Marios H. |
| author_facet | Chattopadhyay, Sambuddha Eckhardt, Christian J. Kennes, Dante M. Sentef, Michael A. Shin, Dongbin Rubio, Angel Cavalleri, Andrea Demler, Eugene A. Michael, Marios H. |
| contents | Inspired by the striking discovery of metastable superconductivity in $\mathrm{K}_3\mathrm{C}_{60}$ at 100K, far above $T_{\textrm{c}}=20K$, we discuss possible mechanisms for long-lived, photo-induced superconductivity. Starting from a model of optically-driven Raman phonons coupled to inter-band electronic transitions, we develop a microscopic mechanism for photo-controlling the pairing interaction. Leveraging this mechanism, we first investigate long-lived superconductivity arising from the thermodynamic metastable trapping of the driven phonon. We then propose an alternative route, where the superconducting gap created by an optical drive leads to a dynamical bottleneck in the equilibration of quasi-particles. We conclude by discussing implications of both scenarios for experiments that can be used to discriminate between them. Our work provides falsifiable explanations for the nanosecond-scale photo-induced superconductivity found in $\mathrm{K}_3\mathrm{C}_{60}$, while simultaneously offering a theoretical basis for exploring metastable superconductivity in other quantum materials. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2303_15355 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Metastable Photo-Induced Superconductivity far above $T_{\textrm{c}}$ Chattopadhyay, Sambuddha Eckhardt, Christian J. Kennes, Dante M. Sentef, Michael A. Shin, Dongbin Rubio, Angel Cavalleri, Andrea Demler, Eugene A. Michael, Marios H. Superconductivity Mesoscale and Nanoscale Physics Statistical Mechanics Strongly Correlated Electrons Optics Inspired by the striking discovery of metastable superconductivity in $\mathrm{K}_3\mathrm{C}_{60}$ at 100K, far above $T_{\textrm{c}}=20K$, we discuss possible mechanisms for long-lived, photo-induced superconductivity. Starting from a model of optically-driven Raman phonons coupled to inter-band electronic transitions, we develop a microscopic mechanism for photo-controlling the pairing interaction. Leveraging this mechanism, we first investigate long-lived superconductivity arising from the thermodynamic metastable trapping of the driven phonon. We then propose an alternative route, where the superconducting gap created by an optical drive leads to a dynamical bottleneck in the equilibration of quasi-particles. We conclude by discussing implications of both scenarios for experiments that can be used to discriminate between them. Our work provides falsifiable explanations for the nanosecond-scale photo-induced superconductivity found in $\mathrm{K}_3\mathrm{C}_{60}$, while simultaneously offering a theoretical basis for exploring metastable superconductivity in other quantum materials. |
| title | Metastable Photo-Induced Superconductivity far above $T_{\textrm{c}}$ |
| topic | Superconductivity Mesoscale and Nanoscale Physics Statistical Mechanics Strongly Correlated Electrons Optics |
| url | https://arxiv.org/abs/2303.15355 |