Role of the coupling of the electronic transitions on the order of the metal-to-insulator phase transition in nickelates
Source abstract
Abstract
Rare-earth nickelates (chemical formula RNiO3, R being a rare-earth cation) display a temperature-dependent metal-to-insulator transition (MIT) together with a breathing distortion of the NiO6 octahedra units at a temperature ranging from 0 to 600 K depending on the size of the R cation. Their rich phase diagram is also characterized by a paramagnetic to antiferromagnetic transition that occurs at the same temperature as the MIT for R = Pr, Nd, while it arises at lower temperatures for all the other members of the series. In this work, we have investigated the order of the MIT in a portion of the phase diagram spanning from SmNiO3 to NdNiO3 by means of temperature dependent transport measurements and resonant elastic x-ray scattering performed on high quality epitaxial SmxNd1−xNiO3 solid solution thin films. Our results show that the order of the metal-to-insulator transition does not depend on whether or not the MIT is coupled with the magnetic transition.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Magnetic and transport properties of perovskites and related materials · Shape Memory Alloy Transformations · Advanced Condensed Matter Physics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
DQMP, University of Geneva 1 , Geneva, Switzerland
Electron Spectrometry and Microscopy Laboratory (LSME), Institute of Physics (IPHYS), Ecole Polytechnique Fédérale de Lausanne (EPFL) 2 , Lausanne, Switzerland
Synchrotron SOLEIL, L’Orme des Merisiers 3 , Saint-Aubin, B.P. 48, 91192 Gif-sur-Yvette, France
Department of Molecular Sciences and Nanosystems, Ca’ Foscari University of Venice 4 , Mestre (VE), Italy
Funding
Schweizerischer Nationalfonds Zur FÃrderung der Wissenschaftlichen Forschung
References (37)
Show source-provided references
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