Generation of Spin Currents in the Skyrmion Phase of a Helimagnetic Insulator $\mathrm{C}{\mathrm{u}}_2\mathrm{OSe}{\mathrm{O}}_3$

Abstract

We report spin-current generation related with skyrmion dynamics resonantly excited by a microwave in a helimagnetic insulator $\mathrm{C}{\mathrm{u}}_2\mathrm{OSe}{\mathrm{O}}_3$. A Pt layer was fabricated on $\mathrm{C}{\mathrm{u}}_2\mathrm{OSe}{\mathrm{O}}_3$ and voltage in the Pt layer was measured upon magnetic resonance of $\mathrm{C}{\mathrm{u}}_2\mathrm{OSe}{\mathrm{O}}_3$ to electrically detect injected spin currents via the inverse spin Hall effect (ISHE) in Pt. We found that ISHE-induced electromotive forces appear in the skyrmion phase of $\mathrm{C}{\mathrm{u}}_2\mathrm{OSe}{\mathrm{O}}_3$ as well as in the ferrimagnetic phase, which shows that magnetic skyrmions can contribute to the spin pumping effect.

arXiv comment15 pages, 5 figures

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Cited by in corpus (10)

• Collective spin excitations of helices and magnetic skyrmions: review and perspectives of magnonics in non-centrosymmetric magnets
• Dynamical magnetoelectric phenomena of multiferroic skyrmions
• Pure spin currents in magnetically ordered insulator/normal metal heterostructures
• Resonance modes and microwave driven translational motion of skyrmion crystal under an inclined magnetic field
• Spin Seebeck effect in a polar antiferromagnet $\alpha$-Cu${}_2$V${}_2$O${}_7$
• Selective Activation of an Isolated Magnetic Skyrmion in a Ferromagnet with Microwave Electric Fields
• Unified formulation of interfacial magnonic pumping from non-collinear magnets
• Spin current pumped by resonant skyrmion
• Growth and helicity of non-centrosymmetric Cu${}_2$OSeO${}_3$ crystals
• Spin current generation driven by skyrmion dynamics under magnetic anisotropy and polarized microwaves