Characterization of the current-induced resistive spots in superconducting YBa2Cu3O7 strips

K. Harrabi, A. F. Salem, K. Ziq, A. I. Mansour, S. Kunwar, J. P. Maneval, Golibjon Berdiyorov

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

For over a decade, ultrathin superconducting films have been developed for the detection of single photons at optical or near infrared frequencies, with competitive performances in terms of quantum efficiency, speed, and low dark count rate. In order to avoid the requirement of helium refrigeration, we consider here the use of high temperature materials, known to achieve very fast responsiveness to laser irradiation. We excite thin filaments of the cuprate YBa2Cu3O7 by rectangular pulses of supercritical current so as to produce either a phase-slip centre (PSC) or a normal hot spot (HS), according to the temperature and the current amplitude selected. That procedure provides information about the maximum bias current to be used in a particle detector, about the return current back to the quiescent state after excitation, and about the rate of growth and decay of a HS. We also measure the time of PSC nucleation. A unique feature of that approach is to provide the rate of heat transfer between the film and its substrate at whatever temperature, in the superconducting state, in the practical conditions of operation.

Original languageEnglish
Pages (from-to)2033-2036
Number of pages4
JournalApplied Physics A: Materials Science and Processing
Volume117
Issue number4
DOIs
Publication statusPublished - 18 Nov 2014
Externally publishedYes

Fingerprint

Induced currents
Particle detectors
Helium
Superconducting films
Bias currents
Ultrathin films
Laser beam effects
Refrigeration
Quantum efficiency
Temperature
Nucleation
Photons
Heat transfer
Infrared radiation
Substrates
barium copper yttrium oxide

ASJC Scopus subject areas

  • Materials Science(all)
  • Chemistry(all)

Cite this

Characterization of the current-induced resistive spots in superconducting YBa2Cu3O7 strips. / Harrabi, K.; Salem, A. F.; Ziq, K.; Mansour, A. I.; Kunwar, S.; Maneval, J. P.; Berdiyorov, Golibjon.

In: Applied Physics A: Materials Science and Processing, Vol. 117, No. 4, 18.11.2014, p. 2033-2036.

Research output: Contribution to journalArticle

Harrabi, K. ; Salem, A. F. ; Ziq, K. ; Mansour, A. I. ; Kunwar, S. ; Maneval, J. P. ; Berdiyorov, Golibjon. / Characterization of the current-induced resistive spots in superconducting YBa2Cu3O7 strips. In: Applied Physics A: Materials Science and Processing. 2014 ; Vol. 117, No. 4. pp. 2033-2036.
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