Depinning frequency in a heavily neutron-irradiated MgB2 sample

Maria Li Vigni, Aurelio Agliolo Gallitto, Martinelli, Marco Bonura

Risultato della ricerca: Articlepeer review

10 Citazioni (Scopus)

Abstract

The magnetic-field-induced variations of the microwave surface resistance have been investigated in a heavily neutron-irradiated MgB2 sample, in which the irradiation has caused the merging of the two gapsinto a single value. The experimental results have been analyzed in the framework of the Coffey and Clem model. By fitting the experimental data, we have determined the field dependence of the depinning frequency,w0, at different values of the temperature. Although the pinning is not particularly effective, the value of w0 obtained at low temperatures is considerably higher than that observed in conventionallow-temperature superconductors.
Lingua originaleEnglish
pagine (da-a)2372-2377
Numero di pagine6
RivistaPHYSICA. C, SUPERCONDUCTIVITY
Volume468
Stato di pubblicazionePublished - 2008

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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