Abstract
We present ultrafast resonant inelastic x-ray scattering (RIXS) experiments performed at the vanadium edge to track changes in the electronic structure of , a classical Mott-Hubbard material. The probed orbital excitations within the shell of the V ion show a sub-ps time response, which evolves at later times to a state that appears electronically indistinguishable from the high-temperature metallic state. For low excitation fluences, a transient recovery or delay is observed, which could be related to a transient dimerization of the V-V bonds. Our results demonstrate the great potential for RIXS spectroscopy to study the ultrafast orbital dynamics in strongly correlated materials.
- Received 19 November 2019
- Revised 5 March 2020
- Accepted 1 April 2020
DOI:https://doi.org/10.1103/PhysRevResearch.2.023110
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
Published by the American Physical Society