Nature Communications (Dec 2022)
Room-temperature valence transition in a strain-tuned perovskite oxide
- Vipul Chaturvedi,
- Supriya Ghosh,
- Dominique Gautreau,
- William M. Postiglione,
- John E. Dewey,
- Patrick Quarterman,
- Purnima P. Balakrishnan,
- Brian J. Kirby,
- Hua Zhou,
- Huikai Cheng,
- Amanda Huon,
- Timothy Charlton,
- Michael R. Fitzsimmons,
- Caroline Korostynski,
- Andrew Jacobson,
- Lucca Figari,
- Javier Garcia Barriocanal,
- Turan Birol,
- K. Andre Mkhoyan,
- Chris Leighton
Affiliations
- Vipul Chaturvedi
- Department of Chemical Engineering and Materials Science, University of Minnesota
- Supriya Ghosh
- Department of Chemical Engineering and Materials Science, University of Minnesota
- Dominique Gautreau
- Department of Chemical Engineering and Materials Science, University of Minnesota
- William M. Postiglione
- Department of Chemical Engineering and Materials Science, University of Minnesota
- John E. Dewey
- Department of Chemical Engineering and Materials Science, University of Minnesota
- Patrick Quarterman
- NIST Center for Neutron Research, National Institute of Standards and Technology
- Purnima P. Balakrishnan
- NIST Center for Neutron Research, National Institute of Standards and Technology
- Brian J. Kirby
- NIST Center for Neutron Research, National Institute of Standards and Technology
- Hua Zhou
- Advanced Photon Source, Argonne National Laboratory
- Huikai Cheng
- Thermo Fisher Scientific
- Amanda Huon
- Neutron Scattering Division, Oak Ridge National Lab
- Timothy Charlton
- Neutron Scattering Division, Oak Ridge National Lab
- Michael R. Fitzsimmons
- Neutron Scattering Division, Oak Ridge National Lab
- Caroline Korostynski
- Department of Chemical Engineering and Materials Science, University of Minnesota
- Andrew Jacobson
- Department of Chemical Engineering and Materials Science, University of Minnesota
- Lucca Figari
- Department of Chemical Engineering and Materials Science, University of Minnesota
- Javier Garcia Barriocanal
- Characterization Facility, University of Minnesota
- Turan Birol
- Department of Chemical Engineering and Materials Science, University of Minnesota
- K. Andre Mkhoyan
- Department of Chemical Engineering and Materials Science, University of Minnesota
- Chris Leighton
- Department of Chemical Engineering and Materials Science, University of Minnesota
- DOI
- https://doi.org/10.1038/s41467-022-35024-8
- Journal volume & issue
-
Vol. 13,
no. 1
pp. 1 – 12
Abstract
Spin-state crossovers are phenomena where, under changes in temperature or pressure, the spin-state of an ion changes. In some materials, this spin-state crossover occurs simultaneously with a metal-insulator transition, driven by a valence transition. Control over such valence, spin-state, and metal-insulator transitions has much technological appeal, but, thus far, materials displaying this have been limited to cryogenic temperatures. Here, the authors show that in strained films of (Pr1-yYy)1- xCaxCoO3-δ, these transitions can be promoted to room temperature.
