Direct measurement of interfacial Dzyaloshinskii-Moriya interaction at the MoS${}_2$/Ni${}_{80}$Fe${}_{20}$ interface

Abstract

We report on a direct measurement of sizable interfacial Dzyaloshinskii-Moriya interaction (iDMI) at the interface of two-dimensional transition metal dichalcogenide (2D-TMD), MoS${}_2$ and Ni${}_{80}$Fe${}_{20}$ (Py) using Brillouin light scattering spectroscopy. A clear asymmetry in spin-wave dispersion is measured in MoS${}_2$/Py/Ta, while no such asymmetry is detected in the reference Py/Ta system. A linear scaling of the DMI constant with the inverse of Py thickness indicates the interfacial origin of the observed DMI. We further observe an enhancement of DMI constant in three to four layer MoS${}_2$/Py system (by 56$\%$) as compared to 2 layer MoS${}_2$/Py which is caused by a higher density of MoO${}_3$ defect species in the case of three to four layer MoS${}_2$. The results open possibilities of spin-orbitronic applications utilizing the 2D-TMD based heterostructures.

References in corpus (19)

• Coupled spin and valley physics in monolayers of MoS2 and other group-VI dichalcogenides
• Skyrmion Lattice in a Chiral Magnet
• Spontaneous Skyrmion Ground States in Magnetic Metals
• Control of spin-orbit torques through crystal symmetry in WTe2/ferromagnet bilayers
• Anatomy of Dzyaloshinskii-Moriya Interaction at Co/Pt Interfaces
• Skyrmions in Magnetic Multilayers
• Interface control of the magnetic chirality in CoFeB|MgO heterosctructures with heavy metal underlayers
• Spectroscopic confirmation of linear relation between Heisenberg- and interfacial Dzyaloshinskii-Moriya-exchange in polycrystalline metal films
• Direct observation of the Dzyaloshinskii-Moriya interaction in a Pt/Co/Ni film
• Interfacial Dzyaloshinskii-Moriya interaction in perpendicularly-magnetized Pt/Co/AlO${}_x$ ultrathin films measured by Brillouin light spectroscopy
• Strong Rashba-Edelstein Effect-Induced Spin-Orbit Torques in Monolayer Transition-Metal Dichalcogenide/Ferromagnet Bilayers
• Significant Dzyaloshinskii-Moriya Interaction at Graphene-Ferromagnet Interfaces due to Rashba-effect
• Perspectives for Spintronics in 2D Materials
• Chiral magnetic textures in Ir/Fe/Co/Pt multilayers: Evolution and topological Hall signature
• Spin-orbit torques in NbSe${}_2$/Permalloy bilayers
• Asymmetric spin-wave dispersion due to Dzyaloshinskii-Moriya interaction in an ultrathin Pt/CoFeB film
• Unravelling Dzyaloshinskii-Moriya interaction and chiral nature of Graphene/Cobalt interface
• Direct Observation of Unusual Interfacial Dzyaloshinskii-Moriya Interaction in Graphene/NiFe/Ta Heterostructure
• Observation of Skyrmions at Room Temperature in Co2FeAl Heusler Alloy Ultrathin Films

Cited by in corpus (4)

• Large spin-to-charge conversion at the two-dimensional interface of transition metal dichalcogenides and permalloy
• Spin-Orbit Torques in Transition Metal Dichalcogenide/Ferromagnet Heterostructures
• Magnetic Proximity induced efficient charge-to-spin conversion in large area PtSe${}_2$/Ni${}_{80}$Fe${}_{20}$ heterostructures
• Nonreciprocal spin-wave dynamics in Pt/Co/W/Co/Pt multilayers