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2008 | 113 | 3 | 955-958
Article title

Dynamics of Hotspot Formation in Nanostructured Superconducting Stripes Excited with Single Photons

Content
Title variants
Languages of publication
EN
Abstracts
EN
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.
Keywords
EN
Year
Volume
113
Issue
3
Pages
955-958
Physical description
Dates
published
2008-03
received
2007-08-26
References
  • 1. . G.N. Gol'tsman, O. Okunev, G. Chulkova, A. Lipatov, A. Semenov, K. Smirnov, B. Voronov, A. Dzardanov, C. Williams, R. Sobolewski, Appl. Phys. Lett. 79, 705 (2001);A.D. Semenov, G.N. Gol'tsman, R. Sobolewski, Semicond. Sci. Technol. 15, R1 (2002)
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  • 3. J. Zhang, W. Slysz, A. Verevkin, R. Sobolewski, O. Okunev, G.N. Gol'tsman, Phys. Rev. B 67, 132508 (2003)
  • 4. A. Verevkin, A. Pearlman, W. Słysz, J. Zhang, M. Currie, A. Korneev, G. Chulkova, O. Okunev, P. Kouminov, K. Smirnov, B. Voronov, G.N. Gol'tsman, R. Sobolewski, J. Mod. Opt. 51, 1447 (2004)
  • 5. K.S. Il'in, M. Lindgren, M. Currie, A.D. Semenov, G.N. Gol'tsman, R. Sobolewski, S.I. Cherednichenko, E.M. Gershenzon, Appl. Phys. Lett. 76, 2752 (2000)
  • 6. T.R. Lemberger, J. Clarke, Phys. Rev. B 23, 1100 (1981)
Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-appv113n337kz
Identifiers
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