Intrinsic Quasiparticle Lifetime in a Superconducting Aluminum
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866913585371807744 |
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| author | Norowski, Konrad Foltyn, Marek Savin, Alexander Zgirski, Maciej |
| author_facet | Norowski, Konrad Foltyn, Marek Savin, Alexander Zgirski, Maciej |
| contents | We use time-resolved thermometry to monitor the decay of nonequilibrium quasiparticles in superconducting Al in the temperature range from $0.3\,$K to $1.2\,$K. The quasiparticle lifetime at higher temperatures ($T>0.7\,$K) agrees well with the calculated energy flow from electrons to phonons, but at lower temperatures it is significantly shorter than the theory predicts. We show well-defined internal equilibrium of quasiparticle system in the studied thermal transients, which implicates that quasiparticle-quasiparticle relaxation is much faster than electron-phonon interaction. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_16614 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Intrinsic Quasiparticle Lifetime in a Superconducting Aluminum Norowski, Konrad Foltyn, Marek Savin, Alexander Zgirski, Maciej Superconductivity Mesoscale and Nanoscale Physics We use time-resolved thermometry to monitor the decay of nonequilibrium quasiparticles in superconducting Al in the temperature range from $0.3\,$K to $1.2\,$K. The quasiparticle lifetime at higher temperatures ($T>0.7\,$K) agrees well with the calculated energy flow from electrons to phonons, but at lower temperatures it is significantly shorter than the theory predicts. We show well-defined internal equilibrium of quasiparticle system in the studied thermal transients, which implicates that quasiparticle-quasiparticle relaxation is much faster than electron-phonon interaction. |
| title | Intrinsic Quasiparticle Lifetime in a Superconducting Aluminum |
| topic | Superconductivity Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2411.16614 |