μ+SR study of carbon-doped MgB2 superconductors

K. Papagelis, J. Arvanitidis, K. Prassides, A. Schenck, T. Takenobu, Y. Iwasa

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Abstract

The evolution of the superconducting properties of the carbon-doped MgB2 superconductors, MgB2-xCx (x = 0.02, 0.04, 0.06) have been investigated by the transverse-field muon spin rotation (TF-μ+SR) technique. The low-temperature depolarisation rate, σ(0) at 0.6 T which is proportional to the second moment of the field distribution of the vortex lattice decreases monotonically with increasing electron doping and decreasing Tc. In addition, the temperature dependence of σ(T) has been analysed in terms of a two-gap model. The size of the two superconducting gaps decreases linearly as the carbon content increases.

Original languageEnglish
Pages (from-to)254-260
Number of pages7
JournalEurophysics Letters
Volume61
Issue number2
DOIs
Publication statusPublished - 2003 Jan
Externally publishedYes

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Papagelis, K., Arvanitidis, J., Prassides, K., Schenck, A., Takenobu, T., & Iwasa, Y. (2003). μ+SR study of carbon-doped MgB2 superconductors. Europhysics Letters, 61(2), 254-260. https://doi.org/10.1209/epl/i2003-00102-1