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Hot spot formation in electron-doped PCCO nanobridges

S. Charpentier, R. Arpaia, J. Gaudet, D. Matte, R. Baghdadi, T. Löfwander, D. Golubev, P. Fournier, T. Bauch, and F. Lombardi
Phys. Rev. B 94, 060503(R) – Published 1 August 2016
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Abstract

We have investigated the transport properties of optimally doped Pr2xCexCuO4δ (PCCO) nanobridges with width down to 100 nm. The critical current density of the nanobridges approaches the Ginzburg-Landau theoretical limit, which demonstrates nanostructures with properties close to the as-grown films. The current voltage characteristics are hysteretic with a sharp voltage switch, of the order of a few millivolts, that we interpret with the occurrence of a hot spot formation. The values of the retrapping current and the voltage switch obtained by modeling the heat transport in the nanobridges are very close to the experimental ones. This feature, together with the extremely short recombination times, make PCCO nanostructures attractive candidates for ultrafast single photon detectors.

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  • Received 2 May 2016

DOI:https://doi.org/10.1103/PhysRevB.94.060503

©2016 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

S. Charpentier1, R. Arpaia1, J. Gaudet2, D. Matte2, R. Baghdadi1, T. Löfwander3, D. Golubev4,5, P. Fournier2, T. Bauch1, and F. Lombardi1,*

  • 1Quantum Device Physics Laboratory, Department of Microtechnology and Nanoscience, Chalmers University of Technology, 41296 Göteborg, Sweden
  • 2Canadian Institute for Advanced Research, Département de Physique, Université de Sherbrooke, J1K 2R1 Sherbrooke, Canada
  • 3Applied Quantum Physics Laboratory, Department of Microtechnology and Nanoscience, Chalmers University of Technology, 41296 Göteborg, Sweden
  • 4Low Temperature Laboratory (OVLL), Aalto University School of Science, P.O. Box 13500, FI-00076 Aalto, Finland
  • 5Institute of Nanotechnology, Karlsruhe Institute of Technology, D-76021 Karlsruhe, Germany

  • *floriana.lombardi@chalmers.se

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Issue

Vol. 94, Iss. 6 — 1 August 2016

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