Electronic structure of A-type antiferomagnetic LaMnO₃ by GW approximation
Nohara, Y. · Yamasaki, A. · Kobayashi, S. · Fujiwara, T.
الأصل · EN
The electronic structure of the A-type antiferromagnetic insulator LaMnO3 is investigated by the GW approximation. The band gap and spectrum are in a good agreement with experimental observation. The on-site/off-site dynamical screened Coulomb interaction on Mn sites is also calculated. Comparison with the results by the Hartree-Fock and the static COHSEX approximations is discussed in detail. The dynamical screening effect is important for the band gap and widths.
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