267 citations · 392 across the 12 of their papers we have counts for
12 papers
Pressure-induced unusual metallic state in EuNiO
Hisao Kobayashi, Shugo Ikeda, Yoshitaka Yoda +7
The perovskite antiferromagnetic ( 220 K) insulator EuNiO undergoes at ambient pressure a metal-to-insulator transition at = 460 K which is assoc…
Phonons and Hybrid Modes in the High and Low Temperature Far Infrared Dynamics of Hexagonal TmMnO3
Néstor E. Massa, Leire del Campo, Domingos De Sousa Meneses +3
We report on TmMnO3 far infrared emissivity and reflectivity spectra from 1910 K to 4 K. At the highest temperature the number of infrared bands is lower than that predicted for ce…
High Temperature Far Infrared Dynamics of Orthorhombic NdMnO3: Emissivity and Reflectivity
Néstor E. Massa, Leire del Campo, Domingos De Sousa Meneses +3
We report on near normal far- and mid-infrared emission and reflectivity of NdMnO3 perovskite from room temperature to sample decomposition above 1800 K. At 300 K the number infrar…
Paramagnetic Collective Electronic Mode and Low Temperature Hybrid Modes in the Far Infrared Dynamics of Orthorhombic NdMnO3
Néstor E. Massa. Leire del Campo, Domingos De Sousa Meneses, Patrick Echegut +2
We report on far- and mid-infrared reflectivity of NdMnO3 from 4 K to 300K. Two main features are distinguished in the infrared spectra: active phonons in agreement with the expect…
Collective Phase-like Mode and the Role of Lattice Distortions at TN~TC in RMn2O5 (R= Pr, Sm, Gd, Tb, Bi)
Néstor E. Massa, Ali F. García-Flores, Domingos De Sousa Meneses +5
We report on electronic collective excitations in RMn2O5 (R= Pr, Sm, Gd, Tb) showing condensation starting at and below TN\simTC\sim40-50 K. Its origin is understood as partial del…
Stability of the Ni sites across the pressure-induced metallization in YNiO3
A. Y. Ramos, C. Piamonteze, H. C. N. Tolentino +7
The local environment of nickel atoms in Y NiO3 across the pressure- induced insulator to metal (IM) transition was studied using X-ray absorption spectroscopy (XAS) supported by a…