@article{544bb473946e4b41b5268c949965fdbc,
title = "Coulomb Correlations Intertwined with Spin and Orbital Excitations in LaCoO3",
abstract = "We carried out temperature-dependent (20-550 K) measurements of resonant inelastic x-ray scattering on LaCoO3 to investigate the evolution of its electronic structure across the spin-state crossover. In combination with charge-transfer multiplet calculations, we accurately quantified the renomalized crystal-field excitation energies and spin-state populations. We show that the screening of the effective on-site Coulomb interaction of 3d electrons is orbital selective and coupled to the spin-state crossover in LaCoO3. The results establish that the gradual spin-state crossover is associated with a relative change of Coulomb energy versus bandwidth, leading to a Mott-type insulator-to-metal transition.",
author = "K. Tomiyasu and J. Okamoto and Huang, {H. Y.} and Chen, {Z. Y.} and Sinaga, {E. P.} and Wu, {W. B.} and Chu, {Y. Y.} and A. Singh and Wang, {R. P.} and {De Groot}, {F. M.F.} and A. Chainani and S. Ishihara and Chen, {C. T.} and Huang, {D. J.}",
note = "Funding Information: We thank the NSRRC staff for technical help during our RIXS measurements at the AGM-AGS beam line of TLS. We thank A. Fujimori, G. Y. Guo, M. W. Haverkort, J. H. Park, I. Solovyev, and L. H. Tjeng for valuable discussions. This work was supported in part by the Ministry of Science and Technology of Taiwan under Grant No. 103-2112-M-213-008-MY3, and by MEXT and JSPS KAKENHI (JP17H06137, JP15H03692, and JP17H02916) of Japan. Publisher Copyright: {\textcopyright} 2017 American Physical Society. Copyright: Copyright 2017 Elsevier B.V., All rights reserved.",
year = "2017",
month = nov,
day = "7",
doi = "10.1103/PhysRevLett.119.196402",
language = "English",
volume = "119",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "19",
}