Hotspot relaxation dynamics in a current-carrying superconductor
- Marsili, F.
- Stevens, M. J.
- Kozorezov, Alexander Georgievich
- Lambert, Colin John
- Stern, J. A.
- Horansky, R. D.
- Dyer, S.
- Duff, S.
- Pappas, D. P.
- Lita, A. E.
- Shaw, M. D.
- Mirin, R. P.
- Nam, Sae Woo
Publication date
March 2016
DOI Publisher
American Physical Society (APS) ISSN
2469-9950Abstract
We experimentally studied the dynamics of optically excited hotspots in current-carrying WSi superconducting nanowires as a function of bias current, bath temperature, and excitation wavelength. We observed that the hotspot relaxation time depends on bias current, temperature, and wavelength. We explained this effect with a model based on quasiparticle recombination, which provides insight into the quasiparticle dynamics of superconductors. © 2016 American Physical Society
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