6533b82efe1ef96bd1292779
RESEARCH PRODUCT
Asymmetric hysteresis for probing Dzyalohsinskii-Moriya interaction
Chun-yeol YouChun-yeol YouDong-soo HanY Yuxiang YinNh Nam KimB Bert KoopmansHjm Henk SwagtenJaehun ChoSukmuck LeeJung-woo KooJune-seo KimMathias Kläuisubject
perpendicular magnetic anisotropyNucleationFOS: Physical sciencesBioengineering02 engineering and technology01 natural sciencesMagnetization0103 physical sciencesMesoscale and Nanoscale Physics (cond-mat.mes-hall)General Materials Sciencechiral magnetThin film010306 general physicsPhysicsDzyaloshinskii-Moriya interactionspintronicsCondensed Matter - Materials ScienceCondensed Matter - Mesoscale and Nanoscale PhysicsSpintronicsCondensed matter physicsMechanical EngineeringSkyrmionMaterials Science (cond-mat.mtrl-sci)General Chemistry021001 nanoscience & nanotechnologyCondensed Matter PhysicsMagnetic hysteresisMagnetic fieldHysteresisnanomagnetism0210 nano-technologyasymmetric hysteresis loopdescription
The interfacial Dzyaloshinskii-Moriya interaction (DMI) is intimately related to the prospect of superior domain-wall dynamics and the formation of magnetic skyrmions. Although some experimental efforts have been recently proposed to quantify these interactions and the underlying physics, it is still far from trivial to address the interfacial DMI. Inspired by the reported tilt of the magnetization of the side edge of a thin film structure, we here present a quasi-static, straightforward measurement tool. By using laterally asymmetric triangular-shaped microstructures, it is demonstrated that interfacial DMI combined with an in-plane magnetic field yields a unique and significant shift in magnetic hysteresis. By systematic variation of the shape of the triangular objects combined with a droplet model for domain nucleation, a robust value for the strength and sign of interfacial DMI is obtained. This method gives immediate and quantitative access to DMI, enabling a much faster exploration of new DMI systems for future nanotechnology.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-07-15 | Nano Letters |