Slow and fast relaxation times of quantum lattice model with local multi-well potentials: phenomenological dynamics for Sn${}_2$P${}_2$S${}_6$ ferroelectric crystals

R. Erdem, S. Özüm, N. Güçlü

As a continuation of the previously published work [Velychko O. V., Stasyuk I. V., Phase Transitions, 2019, 92, 420], a phenomenological framework for the relaxation dynamics of qu…