Fig. 5: Simulations of phonon-dependent magnetic interactions.
From: Ultrafast simultaneous manipulation of multiple ferroic orders through nonlinear phonon excitation

a Time evolution of the absolute (blue) and relative (red) mean value of the nearest neighbor (NN) exchange interaction 〈J1〉. On the right, we show the bonds corresponding to J1, as well as the distance between the atoms. b Time evolution of the mean next nearest neighbor (NNN) exchange interaction 〈J2〉, with corresponding bonds and atomic distances displayed on the right. c Time evolution of the mean magnetocrystalline anisotropy (MCA) 〈K〉. On the right, we show the spin configurations along the [110] and [1\(\bar{1}\)1] directions in the crystal that were used for the computation of the MCA.