Bimeron nanoconfined design

We report on the stabilization of the topological bimeron excitations in confined geometries. The Monte Carlo simulations for a ferromagnet with a strong Dzyaloshinskii-Moriya interaction revealed the formation of a mixed skyrmion-bimeron phase. The vacancy grid created in the spin lattice drastical...

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Bibliographic Details
Published in:arXiv.org 2018-01
Main Authors: Iakovlev, I A, Sotnikov, O M, Mazurenko, V V
Format: Article
Language:English
Subjects:
Computer simulation
Excitation
Ferromagnetism
Hypothetical particles
Lattice vacancies
Monte Carlo simulation
Particle theory
Stabilization
Topology
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Summary:We report on the stabilization of the topological bimeron excitations in confined geometries. The Monte Carlo simulations for a ferromagnet with a strong Dzyaloshinskii-Moriya interaction revealed the formation of a mixed skyrmion-bimeron phase. The vacancy grid created in the spin lattice drastically changes the picture of the topological excitations and allows one to choose between the formation of a pure bimeron and skyrmion lattice. We found that the rhombic plaquette provides a natural environment for stabilization of the bimeron excitations. Such a rhombic geometry can protect the topological state even in the absence of the magnetic field.
ISSN:2331-8422
DOI:10.48550/arxiv.1801.07896