Multiple-gap structure of the binary superconductor MgB2

T. Takasaki, T. Ekino, T. Muranaka, H. Fujii, J. Akimitsu

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)


Electron-tunneling measurements on the superconductor MgB2 with Tc = 39 K have been carried out using a break-junction technique. We have observed the double-gap structures with several combinations of the gap sizes. The largest Δ = 9 meV gap can be observed as a single gap, which gives very strong-coupling ratio 2Δ/kBTc = 5.3-5.7.

Original languageEnglish
Pages (from-to)147-148
Number of pages2
JournalPhysica C: Superconductivity and its applications
Publication statusPublished - May 2003
Externally publishedYes
Eventproceedings of the 23rd international conference on low temper - Hiroshima, Japan
Duration: Aug 20 2002Aug 27 2002


  • Break junction
  • MgB
  • Multiple-gap structure
  • Tunneling spectroscopy

ASJC Scopus subject areas

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


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