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Dynamics of hotspot formation in nanostructured superconducting stripes excited with single photons
Jukna, A., Kitaygorsky, J., Pan, D., Cross, A., Perlman, A., Komissarov, I., et al. (2008). Dynamics of hotspot formation in nanostructured superconducting stripes excited with single photons. Acta Physica Polonica A, 113(3), 955–958.
Dynamics of a resistive hotspot formation by near-infrared-wavelength single photons in nanowire-type superconducting NbN stripes was investigated. Numerical simulations of ultrafast thermalization of photon-excited nonequilibrium quasiparticles, their multiplication and out-diffusion from a site of the photon absorption demonstrate that 1.55 μm wavelength photons create in an ultrathin, two-dimensional superconducting film a resistive hotspot with the diameter which depends on the photon energy, and the nanowire temperature and biasing conditions. Our hotspot model indicates that under the subcritical current bias of the 2D stripe, the electric field penetrates the superconductor at the hotspot boundary, leading to suppression of the stripe superconducting properties and accelerated development of a voltage transient across the stripe.
Dynamics of hotspot formation in nanostructured superconducting stripes excited with single photonsJukna, A.Kitaygorsky, J.Pan, D.Cross, A.Perlman, A.Komissarov, I.Sobolewski, R.Okunev, O.Smirnov, K.Korneev, A.Chulkova, G.Milostnaya, I.Voronov, B.Gol'tsman, G.info:doi/10.12693/APhysPolA.113.955openurl:?ctx_ver=Z39.88-2004&rfr_id=info%3Asid%2Fhttps%3A%2F%2Fdb.rplab.ru%2Frefbase%2F&genre=article&atitle=Dynamics%20of%20hotspot%20formation%20in%20nanostructured%20superconducting%20stripes%20excited%20with%20single%20photons&title=Acta%20Physica%20Polonica%20A&stitle=Acta%20Physica%20Polonica%20A&date=2008&volume=113&issue=3&spage=955&epage=958&aulast=Jukna&aufirst=A.&au=Kitaygorsky%2C%20J.&au=Pan%2C%20D.&au=Cross%2C%20A.&au=Perlman%2C%20A.&au=Komissarov%2C%20I.&au=Sobolewski%2C%20R.&au=Okunev%2C%20O.&au=Smirnov%2C%20K.&au=Korneev%2C%20A.&au=Chulkova%2C%20G.&au=Milostnaya%2C%20I.&au=Voronov%2C%20B.&au=Gol%27tsman%2C%20G.&id=info%3Adoi%2F10.12693%2FAPhysPolA.113.955&sid=refbase%3ARpLabcitekey:Jukna_etal2008Jukna, A., Kitaygorsky, J., Pan, D., Cross, A., Perlman, A., Komissarov, I., et al. (2008). Dynamics of hotspot formation in nanostructured superconducting stripes excited with single photons. Acta Physica Polonica A, 113(3), 955-958.2008JournalArticletextSSPD, SNSPDActa Physica Polonica A20081133955958