Controlled Creation of Quantum Skyrmions
Pia Siegl, Elena Y. Vedmedenko, Martin Stier, Michael Thorwart, Thore, Posske
TL;DR
This paper demonstrates a method for the controlled creation of quantum skyrmions in nanoscopic spin lattices using an adiabatic boundary magnetization rotation, revealing various skyrmion types and stability conditions.
Contribution
It introduces a numerical approach to generate and analyze different quantum skyrmions in lattice systems, highlighting control mechanisms based on coupling strengths and lattice size.
Findings
Quantum skyrmions can be created as ground states or metastable excitations.
Different skyrmion types are characterized by their spin expectation values.
An adiabatic boundary rotation scheme enables controlled skyrmion creation.
Abstract
We study the creation of quantum skyrmions in quadratic nanoscopic lattices of quantum spins coupled by Dzyaloshinkii-Moriya and exchange interactions. We numerically show that different kinds of quantum skyrmions, characterized by the magnitude of their spin expectation values and strong differences in their stability, can appear as ground state and as metastable excitations. In dependence on the coupling strengths and the lattice size, an adiabatic rotation scheme of the magnetization at the lattice boundaries allows for a controlled creation of quantum skyrmions.
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