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arXiv · 2005.02957

Correlation induced emergent charge order in metallic vanadium dioxide

Christopher N. Singh·L. F. J Piper·Hanjong Paik·Darrell G. Schlom·Wei-Cheng Lee
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Abstract

Recent progress in growth and characterization of thin-film VO$_2$ has shown its electronic properties can be significantly modulated by epitaxial matching. To throw new light on the concept of `Mott engineering', we develop a symmetry-consistent approach to treat structural distortions and electronic correlations in epitaxial VO$_2$ films under strain, and compare our design with direct experimental probes. We find strong evidence for the emergence of correlation-driven charge order deep in the metallic phase, and our results indicate that exotic phases of VO$_2$ can be controlled with epitaxial stabilization.

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Christopher N. Singh, L. F. J Piper, Hanjong Paik, Darrell G. Schlom, Wei-Cheng Lee. 2020-05-06. Correlation induced emergent charge order in metallic vanadium dioxide. https://doi.org/10.1103/physrevb.105.035150

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