Orbital dynamics during an ultrafast insulator to metal transition

Autor: Sergii Parchenko, Eugenio Paris, Daniel McNally, Elsa Abreu, Markus Dantz, Elisabeth M. Bothschafter, Alexander H. Reid, William F. Schlotter, Ming-Fu Lin, Scott F. Wandel, Giacomo Coslovich, Sioan Zohar, Georgi L. Dakovski, J. J. Turner, S. Moeller, Yi Tseng, Milan Radovic, Conny Saathe, Marcus Agaaker, Joseph E. Nordgren, Steven L. Johnson, Thorsten Schmitt, Urs Staub
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Physical Review Research, Vol 2, Iss 2, p 023110 (2020)
Druh dokumentu: article
ISSN: 2643-1564
DOI: 10.1103/PhysRevResearch.2.023110
Popis: We present ultrafast resonant inelastic x-ray scattering (RIXS) experiments performed at the vanadium L edge to track changes in the electronic structure of V_{2}O_{3}, a classical Mott-Hubbard material. The probed orbital excitations within the d 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.
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