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Superconductivity in novel Ge-based skutterudites: {Sr,Ba}Pt_4Ge_{12}

Authors
  • Bauer, E.
  • Grytsiv, A.
  • Chen, Xing-Qiu
  • Melnychenko-Koblyuk, N.
  • Hilscher, G.
  • Kaldarar, H.
  • Michor, H.
  • Royanian, E.
  • Giester, G.
  • Rotter, M.
  • Podloucky, R.
  • Rogl, P.
Type
Preprint
Publication Date
Oct 03, 2007
Submission Date
Oct 03, 2007
Identifiers
DOI: 10.1103/PhysRevLett.99.217001
Source
arXiv
License
Unknown
External links

Abstract

Combining experiments and ab initio models we report on $\rm SrPt_4Ge_{12}$ and $\rm BaPt_4Ge_{12}$ as members of a novel class of superconducting skutterudites, where Sr or Ba atoms stabilize a framework entirely formed by Ge-atoms. Below $T_c=5.35$ K, and 5.10 K for $\rm BaPt_4Ge_{12}$ and $\rm SrPt_4Ge_{12}$, respectively, electron-phonon coupled superconductivity emerges, ascribed to intrinsic features of the Pt-Ge framework, where Ge-$p$ states dominate the electronic structure at the Fermi energy.

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