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

Yutaka Uchida; Kenichi Kaminaga; Tomoteru Fukumura; Tetsuya Hasegawa

doi:10.1103/PhysRevB.95.125111

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

15 被引用数 (Scopus)

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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
巻	95
号	12
DOI	https://doi.org/10.1103/PhysRevB.95.125111
出版ステータス	Published - 2017 3月 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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10.1103/PhysRevB.95.125111

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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.",

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AU - Kaminaga, Kenichi

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N2 - 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.

AB - 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.

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

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