Tunneling spectroscopy of MgB2 and Li0.5(THF)yHfNCl

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

Research output: Contribution to journalConference article

36 Citations (Scopus)

Abstract

Break-junction tunneling spectra have been measured on MgB2 and Li0.5(THF)yHfNCl to investigate the nature of the superconducting gap. The observed largest gap values at 4 K are 2Δ = 18-20 and 11-12meV for MgB2 (Tc = 39 K) and Li0.5(THF)yHfNCl (26 K), respectively. These values lead to the similar ratio 2Δ/kBTc = 5-6, which is extremely large in comparison with that of the conventional strong-coupling superconductors.

Original languageEnglish
Pages (from-to)23-25
Number of pages3
JournalPhysica B: Condensed Matter
Volume328
Issue number1-2
DOIs
Publication statusPublished - Apr 1 2003
Externally publishedYes
EventT2PAM - Higashi-Hiroshima, Japan
Duration: Aug 16 2002Aug 19 2002

Keywords

  • Break junction
  • Energy gap
  • Li(THF)HfNCl
  • MgB
  • Superconductivity
  • Tunneling

ASJC Scopus subject areas

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

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    Ekino, T., Takasaki, T., Muranaka, T., Fujii, H., Akimitsu, J., & Yamanaka, S. (2003). Tunneling spectroscopy of MgB2 and Li0.5(THF)yHfNCl. Physica B: Condensed Matter, 328(1-2), 23-25. https://doi.org/10.1016/S0921-4526(02)01801-X