Superconductivity in Lu3Os4Ge13

We report the normal and superconducting state properties of high quality single crystal of Lu3Os4Ge13 grown by Czochralski method. Lu3Os4Ge13 crystallises in the cubic crystal structure (space group Pm3n). Lu3Os4Ge13 is a type-II super conductor (T-c = 3:1K) as determined by the electrical transport, magnetisation and heat capacity measurements. The thermo power measurement shows a large phonon drag effect at low temperatures. The electronic band structure calculations show a multi-valley type band structure and a complex Fermi surface in Lu3Os4Ge13, making it a possible candidate to observe a magnetic field induced triplet superconductivity at ultra-low temperatures.