muSR investigation of magnetism and magnetoelectric coupling in Cu2OSeO3

Abstract

A detailed zero and transverse field (ZF&TF) muon spin rotation (muSR) investigation of magnetism and the magneto-electric coupling in Cu2OSeO3 is reported. An internal magnetic field B_int(T=0) = 85.37(25) mT was found, in agreement with a ferrimagnetic state below Tc = 57.0(1) K. The temperature dependence of the magnetic order parameter is well described by the relation B_int = B(0)(1-(T/Tc)^2)^b with an effective exponent b = 0.39(1) which is close to the critical exponent B ~ 1/3 for a three dimensional (3D) magnetic system. Just above Tc the muon relaxation rate follows the power low λ(T)\propto (T/Tc - 1)^ωwith ω= 1.06(9), which is characteristic for 3D ferromagnets. Measurements of B_int(T) with and without an applied electrostatic field E = 1.66 x 10^5 V/m suggest a possible electric field effect of magnitude ΔBv = Bv(0 V)-Bv(500 V) = - 0.4(4) mT.

7 pages, 5 figures

References in corpus (4)

• Spin current and magneto-electric effect in non-collinear magnets
• Role of the Dzyaloshinskii-Moriya interaction in multiferroic perovskites
• Magnetodielectric coupling of infrared phonons in single crystal Cu${}_2$OSeO${}_3$
• Local magnetism and magnetoelectric effect in HoMnO3 studied with muon-spin relaxation

Cited by in corpus (19)

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• Transverse field muon-spin rotation signature of the skyrmion lattice phase in Cu2OSeO3
• Origin of skyrmion lattice phase splitting in Zn-substituted Cu${}_2$OSeO${}_3$
• $\mu$SR and Neutron Diffraction Investigations on Reentrant Ferromagnetic Superconductor Eu(Fe{0.86}Ir{0.14})2As2
• Megahertz dynamics in skyrmion systems probed with muon-spin relaxation
• Microscopic description of twisted magnetic Cu2OSeO3
• Magnetic structure of the MnGe helimagnet and representation analysis
• Dual nature of magnetism in MnSi
• Low energy magnon dynamics and magneto-optics of the skyrmionic Mott insulator Cu${}_2$OSeO${}_3$
• Pressure Effect on the Spin Density Wave Transition in La${}_2$PrNi${}_2$O${}_{6.96}$
• Growth and helicity of non-centrosymmetric Cu${}_2$OSeO${}_3$ crystals
• Zero-field 29Si nuclear magnetic resonance signature of helimagnons in MnSi
• Investigations of the size distribution and magnetic properties of nanoparticles of Cu${}_2$OSeO${}_3$