Helical and skyrmion lattice phases in three-dimensional chiral magnets: Effect of anisotropic interactions

Abstract

In this work, we study the magnetic orders of the classical spin model with the anisotropic exchange and Dzyaloshinskii-Moriya interactions in order to understand the uniaxial stress effect in chiral magnets such as MnSi. Variational zero temperature (T) calculated results demonstrate that various helical orders can be developed depending on the magnitude of the interaction anisotropy, consistent with the experimental observations at low T. Furthermore, the creation and annihilation of the skyrmions by the uniaxial pressure can be also qualitatively reproduced in our Monte Carlo simulations. Thus, our work suggests that the interaction anisotropy tuned by applied uniaxial stress may play an essential role in modulating the magnetic orders in strained chiral magnets.

21 pages, 5 figures, to be published in Scientific Reports

References in corpus (5)

• Theory of current-driven motion of Skyrmions and spirals in helical magnets
• Skyrmions and Anomalous Hall Effect in a Dzyloshinskii-Moriya Spiral Magnet
• Thermally Driven Ratchet Motion of Skyrmion Microcrystal and Topological Magnon Hall Effect
• Symmetry breaking, slow relaxation dynamics, and topological defects at the field-induced helix reorientation in MnSi
• Highly anisotropic resistivities in the double-exchange model for strained manganites

Cited by in corpus (4)

• The dynamics of local magnetic moments induced by itinerant Weyl electrons
• Three-Dimensional Structure of Hybrid Magnetic Skyrmions Determined by Neutron Scattering
• Finsler geometry modeling and Monte Carlo study of skyrmion shape deformation by uniaxial stress
• Monte Carlo studies of skyrmion stabilization under geometric confinement and uniaxial strain