Direct observation of vacancies and local thermal vibration in thermoelectric rhenium silicide

Shunta Harada, Katsushi Tanakay, Kyosuke Kishida, Norihiko L. Okamoto, Noriaki Endo, Eiji Okunishi, Haruyuki Inui

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The crystal structure of rhenium silicide with an anomalous ordered arrangement of vacancies has been investigated by utilizing sphericalaberration (C s)-corrected scanning transmission electron microscopy (STEM). Using C C s-corrected STEM imaging, we directly observe for the first time ordered silicon vacancies in thermoelectric rhenium silicide accompanied by anomalously large local thermal vibration ("rattling" motion) of silicon atoms in their adjacent sites.

Original languageEnglish
Article number035203
JournalApplied Physics Express
Volume5
Issue number3
DOIs
Publication statusPublished - 2012 Mar 1
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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