Abstract
We report the electronic structure of monoclinic CuO as obtained from first principles calculations utilizing density functional theory plus effective Coulomb interaction (DFT + U) method. In contrast to standard DFT calculations taking into account electronic correlations in DFT + U gave antiferromagnetic insulator with energy gap and magnetic moment values in good agreement with experimental data. The electronic states around the Fermi level are formed by partially filled Cu 3d x²−y² orbitals with significant admixture of O 2p states. Theoretical spectra are calculated using DFT + U electronic structure method and their comparison with experimental photoemission and optical spectra show very good agreement.
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Ekuma, C., Anisimov, V., Moreno, J. et al. Electronic structure and spectra of CuO. Eur. Phys. J. B 87, 23 (2014). https://doi.org/10.1140/epjb/e2013-40949-5
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DOI: https://doi.org/10.1140/epjb/e2013-40949-5