Controlled creation of quantum skyrmions
Pia Siegl, E. Y. Vedmedenko, Martin Stier, Michael Thorwart, Thore Posske
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, the adiabatic rotation of magnetic control fields at the boundary allows for the creation of quantum skyrmions.
Topics & Concepts
SkyrmionSpinsPhysicsCondensed matter physicsMetastabilityQuantumAdiabatic processGround stateLattice (music)Spin (aerodynamics)Quantum mechanicsThermodynamicsAcousticsMagnetic properties of thin filmsQuantum and electron transport phenomenaTopological Materials and Phenomena