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. 2020 Feb 12;21(6):546–551. doi: 10.1002/cphc.201901088

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© 2020 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA.

This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Dependence of the optical band gap $E_{opt}$ of ZnFe₂O₄ on the Hubbard parameter U _eff. Calculations are carried out with PBE+U (U _eff=0.3, 0.4, 0.5, 0.6, 1.0, 3.0, 5.0 eV)/evGW/BSE, all calculations including vertex corrections.