Growth and helicity of non-centrosymmetric Cu${}_2$OSeO${}_3$ crystals

Abstract

We have grown Cu${}_2$OSeO${}_3$ single crystals with an optimized chemical vapor transport technique by using SeCl${}_4$ as a transport agent. Our optimized growth method allows to selectively produce large high quality single crystals. The method is shown to consistently produce Cu${}_2$OSeO${}_3$ crystals of maximum size 8 mm x 7 mm x 4 mm with a transport duration of around three weeks. We found this method, with SeCl${}_4$ as transport agent, more efficient and simple compared to the commonly used growth techniques reported in literature with HCl gas as transport agent. The Cu${}_2$OSeO${}_3$ crystals have very high quality and the absolute structure are fully determined by simple single crystal x-ray diffraction. We observed both type of crystals with left- and right-handed chiralities. Our magnetization and ferromagnetic resonance data show the same magnetic phase diagram as reported earlier.

References in corpus (9)

• Long wavelength helimagnetic order and skyrmion lattice phase in Cu2OSeO3
• Observation of two independent skyrmion phases in a chiral magnetic material
• Ferrimagnetism of the magnetoelectric compound Cu${}_2$OSeO${}_3$ probed by ${}^{77}$Se NMR
• Surface sensitivity of the spin Seebeck effect
• Low spin wave damping in the insulating chiral magnet Cu${}_2$OSeO${}_3$
• Microwave spectroscopy of the low-temperature skyrmion state in Cu2OSeO3
• Establishing the fundamental magnetic interactions in the chiral skyrmionic Mott insulator Cu2OSeO3 by terahertz electron spin resonance
• Dissipation processes in the insulating skyrmion compound Cu2OSeO3
• Generation of Spin Currents in the Skyrmion Phase of a Helimagnetic Insulator $\mathrm{C}{\mathrm{u}}_2\mathrm{OSe}{\mathrm{O}}_3$

Cited by in corpus (3)

• Chiral surface spin textures in Cu${}_2$OSeO${}_3$ unveiled by soft x-ray scattering in specular reflection geometry
• Hybrid magnetization dynamics in ${\text{Cu}}_{\text{2}}{\text{OSeO}}_{\text{3}}$/$\mathrm{NiFe}$ heterostructures
• Observation of distorted tilted conical phase at the surface of a bulk chiral magnet with resonant elastic x-ray scattering