Superconductivity of YB$_{6 }$. Energy gap and electron-phonon interaction studies by point-contact spectroscopy

POSTER

Abstract

Ytrium hexaboride has the second highest critical temperature, $T_{c} \quad \sim $ 8 K, among all borides. The paper deals with the point-contact-spectroscopy study of its superconducting energy gap. The temperature dependence of the energy gap and the strength of the superconducting coupling are determined as well. By the same method also the electron-phonon interaction in the system is addressed.

*The support for slovak grants APVT-51-016604 and VEGA-4061 is acknowledged.

Authors

  • Pavol Szabo

    • Centre of Low Temperature Physics, IEP Slovak Academy of Sciences \& P.J.\v{S}af\'arik University, Slovakia

  • Jozef Kacmarcik

    • Centre of Low Temperature Physics, IEP Slovak Academy of Sciences \& P.J.\v{S}af\'arik University, Slovakia

  • Peter Samuely

    • Centre of Low Temperature Physics, IEP Slovak Academy of Sciences \& P.J.\v{S}af\'arik University, Slovakia
    • Centre of Low Temperature Physics IEP Slovak Academy of Sciences, SK-04001 Kosice, Slovakia

  • Jan Girovsky

    • Centre of Low Temperature Physics, IEP Slovak Academy of Sciences \& P.J.\v{S}af\'arik University, Slovakia

  • Slavomir Gabani

    • Centre of Low Temperature Physics, IEP Slovak Academy of Sciences \& P.J.\v{S}af\'arik University, Slovakia

  • Karol Flachbart

    • Centre of Low Temperature Physics, IEP Slovak Academy of Sciences \& P.J.\v{S}af\'arik University, Slovakia

  • Takao Mori

    • Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan