Samarium monoxide epitaxial thin film as a possible heavy-fermion compound

Yutaka Uchida, Kenichi Kaminaga, Tomoteru Fukumura, Tetsuya Hasegawa

研究成果: Article査読

9 被引用数 (Scopus)

抄録

SmO (001) epitaxial thin films were grown on YAlO3 (110) substrates by pulsed laser deposition method. X-ray photoemission spectroscopy indicated coexistence of Sm2+ and Sm3+, suggesting a valence fluctuating state. A SmO thin film showed a metallic conductionlike SmO polycrystal in a previous study. However, a SmO thin film showed nonmonotonical temperature dependence at low temperature in contrast with the polycrystal. A local resistivity minimum was observed at 16 K, probably caused by the dense Kondo effect, and the resistivity below 2 K was proportional to T2. These features suggest the heavy-fermionic nature of SmO.

本文言語English
論文番号125111
ジャーナルPhysical Review B
95
12
DOI
出版ステータスPublished - 2017 3 8

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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