Topological dynamical quantum phase transition in a quantum skyrmion phase
| Autor: | Vipin Vijayan, L. Chotorlishvili, A. Ernst, S. S. P. Parkin, M. I. Katsnelson, S. K. Mishra |
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| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Physical Review B, 107, 10, pp. 1-7 Physical Review B, 107, 1-7 Physical Review B |
| ISSN: | 2469-9969 2469-9950 |
| Popis: | The quantum skyrmionic phase is modeled in a two-dimensional helical spin lattice. This topological skyrmionic phase retains its nature in a large parameter space before moving to a ferromagnetic phase. Next -nearest-neighbor interaction improves the stability and it also causes a shift of the topological phase in the parameter space. Nonanalytic behavior 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. |
| Databáze: | OpenAIRE |
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