Importance of d-p Coulomb interaction for high T-C cuprates and other oxides
Hansmann P, Parragh N, Toschi A, Sangiovanni G, Held K (2014)
Publication Type: Journal article
Publication year: 2014
Journal
Book Volume: 16
DOI: 10.1088/1367-2630/16/3/033009
Abstract
Current theoretical studies of electronic correlations in transition metal oxides typically only account for the local repulsion between d-electrons even if oxygen ligand p-states are an explicit part of the effective Hamiltonian. Interatomic interactions such as U-pd between d- and (ligand) p-electrons, as well as the local interaction between p-electrons, are neglected. Often, the relative d-p orbital splitting has to be adjusted 'ad hoc' on the basis of the experimental evidence. By applying the merger of local density approximation and dynamical mean field theory to the prototypical case of the three-band Emery dp model for the cuprates, we demonstrate that, without any 'ad hoc' adjustment of the orbital splitting, the charge transfer insulating state is stabilized by the interatomic interaction U-pd. Our study hence shows how to improve realistic material calculations that explicitly include the p-orbitals.
Authors with CRIS profile
Involved external institutions
École Polytechnique - Université Paris-Saclay
France (FR)
Julius-Maximilians-Universität Würzburg
Germany (DE)
Technische Universität Wien / Vienna University of Technology
Austria (AT)
France (FR)
Julius-Maximilians-Universität Würzburg
Germany (DE)
Technische Universität Wien / Vienna University of Technology
Austria (AT)
How to cite
APA:
Hansmann, P., Parragh, N., Toschi, A., Sangiovanni, G., & Held, K. (2014). Importance of d-p Coulomb interaction for high T-C cuprates and other oxides. New Journal of Physics, 16. https://dx.doi.org/10.1088/1367-2630/16/3/033009
MLA:
Hansmann, Philipp, et al. "Importance of d-p Coulomb interaction for high T-C cuprates and other oxides." New Journal of Physics 16 (2014).
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