New phases of binary compounds: CsCl-type RuGe and RuSn

Y. Sakai, Masanori Matoba, I. Yamada, K. Funakoshi, T. Kunimoto, Y. Higo, Yoichi Kamihara

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Abstract

We have discovered new phases of binary compounds of Ru and group-14 elements, CsCl-type cubic (Pm-3m) RuGe and RuSn. These materials are synthesized by heat treatment under high pressure, at more than 9.0 GPa for RuGe and 5.0 GPa for RuSn. Both polycrystalline samples exhibit metallic resistivity of 40-120 μΩ. Pseudo-potential density functional theory calculations clarify that Ru 4d orbitals hybridized with Ge/Sn p orbitals dominantly form a Fermi surface. Calculated dynamic properties of these phases show the stability of the CsCl-type phases and the good agreement with the experimental results.

Original languageEnglish
Article number56003
JournalEPL
Volume107
Issue number5
DOIs
Publication statusPublished - 2014 Sep 1

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Sakai, Y., Matoba, M., Yamada, I., Funakoshi, K., Kunimoto, T., Higo, Y., & Kamihara, Y. (2014). New phases of binary compounds: CsCl-type RuGe and RuSn. EPL, 107(5), [56003]. https://doi.org/10.1209/0295-5075/107/56003