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\begin{document}
\title{Point contact spectroscopy measurements on the filled skutterudite compound LaRu$_4$As$_{12}$}
\author{V. Ha\v{s}kov\'{a}}
\affiliation{Centre of Low Temperature Physics, Institute of Exp. Physics, Slovak Academy of Sciences, Ko\v{s}ice, Slovakia}
\author{P. Szab\'{o}}
\affiliation{Centre of Low Temperature Physics, Institute of Exp. Physics, Slovak Academy of Sciences, Ko\v{s}ice, Slovakia}
\author{V. Pa\v{l}uchov\'{a}}
\affiliation{Centre of Low Temperature Physics, Institute of Exp. Physics, Slovak Academy of Sciences, Ko\v{s}ice, Slovakia}
\author{\underline{J. Ka\v{c}mar\v{c}\'{i}k}}
\affiliation{Centre of Low Temperature Physics, Institute of Exp. Physics, Slovak Academy of Sciences, Ko\v{s}ice, Slovakia}
\author{R.~Pu\'{z}niak}
\affiliation{Institute of Physics, Polish Academy of Sciences, Wroclaw, Poland}
\author{Z.~Henkie}
\affiliation{Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Wroclaw, Poland}
\author{T.~Cichorek}
\affiliation{Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Wroclaw, Poland}
\author{P.~Samuely}
\affiliation{Centre of Low Temperature Physics, Institute of Exp. Physics, Slovak Academy of Sciences, Ko\v{s}ice, Slovakia}
\begin{abstract}
Recently it was proposed that the filled skutterudite compound LaRu$_4$As$_{12}$ is another example of a multi-band superconductor [1]. Here we report point-contact (PC) spectroscopy measurements on the single crystal of LaRu$_4$As$_{12}$ with the critical temperature $T_c$ = 10.4 K. The PC spectra were measured at various temperatures down to 1.5 K. From evolution of the point-contact spectra, the temperature dependence of the superconducting energy gap and the strength of the superconducting coupling were determined. Complementary experiments by $ac$-calorimetry were performed on the same LaRu$_4$As$_{12}$ crystal. Specific heat measurements with both temperature and magnetic field sweeps will be also discussed.


\textbf{References:}
\begin{spacing}{0.8}

{\scriptsize[1] L. Bochenek, R. Wawryk, Z. Henkie, and T. Cichorek, PRB \textbf{86} (2012) 060511(R)}
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\end{abstract}
\maketitle

\end{document}
