Collective resonant dynamics of the chiral spin soliton lattice in a monoaxial chiral magnetic crystal

Abstract

The magnetic resonance properties of microsized monoaxial chiral crystals of ${\mathrm{CrNb}}_{3}{\mathrm{S}}_{6}$ are investigated. We observed that the resonance of the chiral soliton lattice is sensitive to the polarization of the driving microwave field. When the microwave field is parallel to the helical axis, the resonance is symmetric with regards to the magnetic field direction. In contrast, asymmetric field dependence emerges when the microwave field is perpendicular to the helical axis. The robustness of the chiral magnetic order, due to topological protection, allows tuning the resonance frequency in ways hardly accessible using nanopatterned films.