Topological dynamical quantum phase transition in a quantum skyrmion phase
Strongly Correlated Electrons
2023-04-18 v2 Quantum Physics
Abstract
Quantum skyrmionic phase is modelled in a 2D helical spin lattice. This topological skyrmionic phase retains its nature in a large parameter space before moving to a ferromagnetic phase. Next nearest-neighbour interaction improves the stability and it also causes a shift of the topological phase in the parameter space. Nonanalytic behaviour of the rate function observed, when the system which is initially in a quantum skyrmion phase is quenched to a trivial quantum ferromagnetic phase, indicates a dynamical quantum phase transition. Dynamical quantum phase transition is absent when the system initially in a skyrmion phase is quenched to a helical phase.
Cite
@article{arxiv.2303.06977,
title = {Topological dynamical quantum phase transition in a quantum skyrmion phase},
author = {Vipin Vijayan and L. Chotorlishvili and A. Ernst and S. S. P. Parkin and M. I. Katsnelson and S. K. Mishra},
journal= {arXiv preprint arXiv:2303.06977},
year = {2023}
}