[Zurück]

E. Bauer, A. Grytsiv, X. Chen, N. Melnychenkc-Koblyuk, G. Hilscher, H. Kaldarar, H. Michor, E. Royanian, G. Giester, M. Rotter, R. Podloucky, P. Rogl:
"Superconductivity in Novel Ge-Based Skutterudites: {Sr,Ba}Pt₄Ge₁₂";
Physical Review Letters, 99 (2007), S. 217001-1 - 217001-4.

Superconductivity in Novel Ge-Based Skutterudites: {Sr,Ba}Pt₄Ge₁₂
E. Bauer, A. Grytsiv, Xing-Qiu Chen, N. Melnychenko-Koblyuk, G. Hilscher, H. Kaldarar, H. Michor, E. Royanian, G. Giester, M. Rotter, R. Podloucky and P. Rogl

Institute of Solid State Physics, Vienna University of Technology, A-1040 Wien, Austria
Institute of Physical Chemistry, University of Vienna, A-1090 Wien, Austria
Institute of Mineralogy and Crystallography, University of Vienna, Althanstrasse 14, A-1090 Wien, Austria
School of Materials and Metallurgy, Northeastern University, Shenyang, 110004, Peoples Republic of China
(Received 3 July 2007; published 20 November 2007)

Combining experiments and ab initio models we report on SrPt₄Ge₁₂ and BaPt₄Ge₁₂ as members of a novel class of superconducting skutterudites, where Sr or Ba atoms stabilize a framework entirely formed by Ge atoms. Below Tc=5.35 and 5.10 K for BaPt₄Ge₁₂ and SrPt₄Ge₁₂, 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.

http://dx.doi.org/10.1103/PhysRevLett.99.217001

http://link.aps.org/abstract/PRL/v99/e217001