期刊
PHYSICAL REVIEW B
卷 78, 期 10, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.78.104101
关键词
-
资金
- European Network of Excellence FAME (Functionalized Advanced Materials and Engineering)
- European Strep MaCoMuFi
We report a temperature-dependent Raman scattering investigation of thin-film rare earth nickelates SmNiO3, NdNiO3, and Sm0.60Nd0.40NiO3 which present a metal-to-insulator (MI) transition at T-MI and an antiferromagnetic-paramagnetic Neel transition at T-N. Our results provide evidence that all investigated samples present a structural phase transition at T-MI but the Raman signature across T-MI is significantly different for NdNiO3 (T-MI=T-N) compared to SmNiO3 and Sm0.60Nd0.40NiO3 (T-MI not equal T-N). It is namely observed that the paramagnetic-insulator phase (T-N
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