Superconductivity in Lu3Os4Ge13

International Conference on Strongly Correlated Electron Systems 2014

Prakash, Om^1 ; Thamizhavel, A.^1 ; Ramakrishnan, S.^1

Department of Condensed Matter Physics and Material Science, Tata Institute of Fundamental Research, Mumbai

400005, India^1

关键词: Cubic crystal structures;    Electronic band structure calculation;    Heat capacity measurements;    High quality single crystals;    Thermopower measurements;    Triplet superconductivity;    Type II superconductors;    Ultra low temperatures;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/592/1/012065/pdf
DOI  :  10.1088/1742-6596/592/1/012065

来源: IOP

【 摘 要 】

We report the normal and superconducting state properties of high quality single crystal of Lu3Os4Ge13grown by Czochralski method. Lu3Os4Ge13crystallises in the cubic crystal structure (space group Pm3n). Lu3Os4Ge13is a type-II superconductor (Tc3.1 K) as determined by the electrical transport, magnetisation and heat capacity measurements. The thermopower 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.