Figure 6
From: Efficient parameterisation of non-collinear energy landscapes in itinerant magnets
The parameterisation of three different models are shown for bcc Fe. (a) shows the result for the \({\mathbf {H}}_{0}\) model together with exchange parameters calculated using Lichtenstein et al.9 method, with and without the DLM formalism. (b) and (c) shows the result for the \({\mathbf {H}}_{2}\) and \({\mathbf {H}}_{1}\) models respectively. For the \({\mathbf {H}}_{2}\) and \({\mathbf {H}}_{1}\) models, the sums of the distances between the moment-quadrupoles are divided by four in order to make the distances of the exchange parameters \(J_{ij}\) comparable with the \(B_{ijkl}\). (d) Total energy for a set of different non-collinear states with increasing cone-angle towards the right. For each cone-angle, there are five different configurations with random azimuthal angle.
