Epitaxial synthesis and physical properties of double-perovskite oxide Sr2CoRuO6 thin films

K. Watarai, K. Yoshimatsu, K. Horiba, H. Kumigashira, O. Sakata, A. Ohtomo

研究成果: Article査読

4 被引用数 (Scopus)

抄録

We report epitaxial structures and physical properties of double-perovskite Sr2CoRuO6 films grown using pulsed-laser deposition. Samples with a degree of Co/Ru order of 2-73% were obtained by changing growth temperature. X-ray absorption spectroscopy (XAS) on the highest ordered sample revealed that Co ions were trivalent with a high-spin configuration and Ru ions were pentavalent. We found large differences in magnetization and resistivity between the highest and lowest ordered samples as well as the absence of strong magnetism and metallicity, which are common characteristics of SrCoO3 and SrRuO3. Using resonant photoemission spectroscopy and XAS, dominant d-orbital components at the top of the occupied state (the bottom of the unoccupied state) were identified to be Ru 4d t2g (Co 3d and Ru 4d t2g). These results suggest that the ground state of double-perovskite Sr2CoRuO6 is a ferrimagnetic insulator.

本文言語English
論文番号436005
ジャーナルJournal of Physics Condensed Matter
28
43
DOI
出版ステータスPublished - 2016 9 7
外部発表はい

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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