Krüger, Ekkehard2021-01-112021-01-1120202073-89941744377871http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-ds-112371http://elib.uni-stuttgart.de/handle/11682/11237http://dx.doi.org/10.18419/opus-11220This paper reports evidence that the antiferromagnetic and insulating ground state of MnO is caused by a nonadiabatic atomic-like motion, as is evidently the case in NiO. In addition, it is shown that experimental findings on the displacements of the Mn and O atoms in the antiferromagnetic phase of MnO corroborate the presented suggestion that the rhombohedral-like distortion in antiferromagnetic MnO, as well as in antiferromagnetic NiO is an inner distortion of the monoclinic base-centered Bravais lattice of the antiferromagnetic phases.eninfo:eu-repo/semantics/openAccess530article