Relaxation dynamics of modulated magnetic phases in skyrmion host GaV4S8: an ac magnetic susceptibility study

Abstract

We report on the slow magnetization dynamics observed upon the magnetic phase transitions of GaV4S8, a multiferroic compound featuring a long-ranged cycloidal magnetic order and a Néel-type skyrmion lattice in a relatively broad temperature range below its Curie temperature. The fundamental difference between GaV4S8 and the chiral helimagnets, wherein the skyrmion phase was first discovered, lies within the polar symmetry of GaV4S8, promoting a cycloidal instead of a helical magnetic order and rendering the magnetic phase diagram essentially different from that in the cubic helimagnets. Our ac magnetic susceptibility study reveals slow relaxation dynamics at the field-driven phase transitions between the cycloidal, skyrmion lattice and field-polarized states. At each phase boundary, the characteristic relaxation times were found to exhibit a strong temperature dependence, starting from the minute range at low temperatures, decreasing to the micro- to millisecond range at higher temperatures.

References in corpus (16)

• Magnetic skyrmion logic gates: conversion, duplication and merging of skyrmions
• Skyrmion-skyrmion and skyrmion-edge repulsions in skyrmion-based racetrack memory
• Long wavelength helimagnetic order and skyrmion lattice phase in Cu2OSeO3
• Magnetic phase diagram of MnSi inferred from magnetization and ac susceptibility
• Electric field-induced Skyrmion distortion and giant lattice rotation in the magnetoelectric insulator Cu2OSeO3
• Multiferroicity and skyrmions carrying electric polarization in GaV4S8
• Memory functions of magnetic skyrmions
• Filming the formation and fluctuation of Skyrmion domains by cryo-Lorentz Transmission Electron Microscopy
• Symmetry breaking, slow relaxation dynamics, and topological defects at the field-induced helix reorientation in MnSi
• Characteristics of ferroelectric-ferroelastic domains in N{é}el-type skyrmion host GaV${}_4$S${}_8$
• Magnetic relaxation phenomena in the Chiral Magnet Fe${}_{1-x}$Co${}_x$Si: An ac susceptibility study
• Polar Dynamics at the Jahn-Teller Transition in Ferroelectric GaV4S8
• On the multiferroic skyrmion-host GaV4S8
• Unusual Ferroelectricity Induced by the Jahn-Teller Effect: A Case Study on Lacunar Spinel Compounds
• Dissipation processes in the insulating skyrmion compound Cu2OSeO3
• Thermodynamic Properties of Ferromagnetic Mott- Insulators GaV4S8

Cited by in corpus (10)

• Entropy-limited topological protection of skyrmions
• A.C. susceptibility as a probe of low-frequency magnetic dynamics
• Cycloidally modulated magnetic order stabilized by thermal fluctuations in the Néel-type skyrmion host GaV${}_4$S${}_8$
• Magnetic phases of skyrmion-hosting GaV${}_4$S${}_{8-y}$Se${}_y$ ($y=0,2,4,8$) probed with muon spectroscopy
• Magnetic field dependence of the nonlinear magnetic response and tricritical point in the monoaxial chiral helimagnet Cr${}_{1/3}$NbS${}_2$
• An ac-susceptibility study of magnetic relaxation phenomena in the antiskyrmion hosting tetragonal Mn-Pt(Pd)-Sn system
• Establishing magneto-structural relationships in the solid solutions of the skyrmion hosting family of materials: GaV${}_4$S${}_{8-y}$Se${}_y$
• Magnetoentropic mapping and computational modeling of cycloids and skyrmions in the lacunar spinels GaV${}_4$S${}_8$ and GaV${}_4$Se${}_8$
• Robust cycloid crossover driven by anisotropy in the skyrmion host GaV${}_4$S${}_8$
• Dislocation-driven relaxation processes at the conical to helical phase transition in FeGe