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 language | English |
|---|---|
| Article number | 125111 |
| Journal | Physical Review B |
| Volume | 95 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 2017 Mar 8 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
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Uchida, Y., Kaminaga, K., Fukumura, T., & Hasegawa, T. (2017). Samarium monoxide epitaxial thin film as a possible heavy-fermion compound. Physical Review B, 95(12), [125111]. https://doi.org/10.1103/PhysRevB.95.125111