Theory of magnetoelastic resonance in a mono-axial chiral helimagnet

Abstract

We study magnetoelastic resonance phenomena in a mono-axial chiral helimagnet belonging to hexagonal crystal class. By computing the spectrum of coupled elastic wave and spin wave, it is demonstrated how hybridization occurs depending on their chirality. Specific features of the magnetoelastic resonance are discussed for the conical phase and the soliton lattice phase stabilized in the mono-axial chiral helimagnet. The former phase exhibits appreciable non-reciprocity of the spectrum, the latter is characterized by a multi-resonance behavior. We propose that the non-reciprocal spin wave around the forced-ferromagnetic state has potential capability to convert the linearly polarized elastic wave to circularly polarized one with the chirality opposite to the spin wave chirality.

12 pages, 5 figures, Accepted in Phys. Rev. B

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• Tensile deformations of the magnetic chiral soliton lattice probed by Lorentz transmission electron microscopy
• Chiral Magnets from String Theory
• Nonreciprocal Phonon Propagation in a Metallic Chiral Magnet
• Exact Ground States and Domain Walls in One Dimensional Chiral Magnets
• Skyrmion crystal phase on a magnetic domain wall in chiral magnets
• Solitonic ground state in supersymmetric theory in background
• Magnetic D-brane solitons: skyrmion strings ending on a Néel wall in chiral magnets
• Chiral non-Abelian domain walls in the Ginzburg-Landau theory