Topological dynamical quantum phase transition in a quantum skyrmion phase

• URL: http://arxiv.org/abs/2303.06977v2
• Date: Mon, 17 Apr 2023 12:20:36 GMT
• Title: Topological dynamical quantum phase transition in a quantum skyrmion phase
• Authors: Vipin Vijayan, L. Chotorlishvili, A. Ernst, S. S. P. Parkin, M. I. Katsnelson, S. K. Mishra
• Abstract summary: Quantum skyrmionic phase is modelled in a 2D helical spin lattice. Next nearest-neighbour interaction improves the stability. It also causes a shift of the topological phase in the parameter space.
• Score: 0.0
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• 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.

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