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

Yutaka Uchida, Kenichi Kaminaga, Tomoteru Fukumura, Tetsuya Hasegawa

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number125111
JournalPhysical Review B
Volume95
Issue number12
DOIs
Publication statusPublished - 2017 Mar 8

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Samarium monoxide epitaxial thin film as a possible heavy-fermion compound'. Together they form a unique fingerprint.

  • Cite this