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• W2036568046 abstract "We report on the observation of orbital excitations in YVO3 by means of resonant inelastic x-ray scattering (RIXS) at energies across the vanadium L3 and oxygen K absorption edges. Due to the excellent experimental resolution we are able to resolve the intra-t2g excitations at 0.1-0.2 eV, 1.07 eV, and 1.28 eV, the lowest excitations from the t2g into the eg levels at 1.86 eV, and further excitations above 2.2 eV. For the intra-t2g excitations at 0.1-0.2 eV, the RIXS peaks show small shifts of the order of 10-40 meV as a function of temperature and of about 13-20 meV as a function of the transferred momentum q||a. We argue that the latter reflects a finite dispersion of the orbital excitations. For incident energies tuned to the oxygen K edge, RIXS is more sensitive to intersite excitations. We observe excitations across the Mott-Hubbard gap and find an additional feature at 0.4 eV which we attribute to two-orbiton scattering, i.e., an exchange of orbitals between adjacent sites. Altogether, these results indicate that both superexchange interactions and the coupling to the lattice are important for a quantitative understanding of the orbital excitations in YVO3." @default.
• W2036568046 created "2016-06-24" @default.
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• W2036568046 date "2013-11-13" @default.
• W2036568046 modified "2023-10-18" @default.
• W2036568046 title "Orbital superexchange and crystal field simultaneously at play in YVO<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:msub><mml:mrow /><mml:mn>3</mml:mn></mml:msub></mml:math>: Resonant inelastic x-ray scattering at the V<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mi>L</mml:mi></mml:math>edge and the O<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mi>K</mml:mi></mml:math>edge" @default.
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• W2036568046 doi "https://doi.org/10.1103/physrevb.88.205115" @default.
• W2036568046 hasPublicationYear "2013" @default.
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