Direct Observation of Unusual Interfacial Dzyaloshinskii-Moriya Interaction in Graphene/NiFe/Ta Heterostructure

Abstract

Graphene/ferromagnet interface promises a plethora of new science and technology. The interfacial Dzyaloshinskii Moriya interaction (iDMI) is essential for stabilizing chiral spin textures, which are important for future spintronic devices. Here, we report direct observation of iDMI in graphene/Ni80Fe20/Ta heterostructure from non-reciprocity in spin-wave dispersion using Brillouin light scattering (BLS) technique. Linear scaling of iDMI with the inverse of Ni80Fe20 thicknesses suggests primarily interfacial origin of iDMI. Both iDMI and spin-mixing conductance increase with the increase in defect density of graphene obtained by varying argon pressure during sputter deposition of Ni80Fe20. This suggests that the observed iDMI originates from defect-induced extrinsic spin-orbit coupling at the interface. The direct observation of iDMI at graphene/ferromagnet interface without perpendicular magnetic anisotropy opens new route in designing thin film heterostructures based on 2-D materials for controlling chiral spin structure such as skyrmions and bubbles, and magnetic domain-wall-based storage and memory devices.

References in corpus (33)

• The electronic properties of graphene
• Quantum Spin Hall Effect in Graphene
• Doping graphene with metal contacts
• Electronic spin transport and spin precession in single graphene layers at room temperature
• Graphene Spintronics
• Spin pumping and magnetization dynamics in metallic multilayers
• Impurity induced spin-orbit coupling in graphene
• Graphite and graphene as perfect spin filters
• Tunneling Spin Injection into Single Layer Graphene (Supplementary Information)
• Tunneling Spin Injection into Single Layer Graphene
• Highly efficient spin transport in epitaxial graphene on SiC
• Graphene for spintronics: giant Rashba splitting due to hybridization with Au
• 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
• Thickness dependence of the interfacial Dzyaloshinskii-Moriya interaction in inversion symmetry broken systems
• Significant Dzyaloshinskii-Moriya Interaction at Graphene-Ferromagnet Interfaces due to Rashba-effect
• Diffusive spin dynamics in ferromagnetic thin films with a Rashba interaction
• Interfacial Dzyaloshinskii-Moriya interaction in Pt/CoFeB films: effect of the heavy-metal thickness
• Controlling spin relaxation in hexagonal BN-encapsulated graphene with a transverse electric field
• Nanosecond spin lifetimes in single- and few-layer graphene-hBN heterostructures at room temperature
• Soliton-like magnetic domain wall motion induced by the interfacial Dzyaloshinskii-Moriya interaction
• Scaling of Dzyaloshinskii Moriya interaction at heavy metal and ferromagnetic metal interfaces
• Anatomy and giant enhancement of the perpendicular magnetic anisotropy of cobalt-graphene heterostructures
• Chiral damping of magnetic domain walls
• Interfacial Control of Dzyaloshinskii Moriya Interaction in Heavy Metal_Ferromagnetic Metal Thin Film Heterostructures
• Electrical Probing of Field-Driven Cascading Quantized Transitions of Skyrmion Cluster States in MnSi Nanowires
• Unravelling Dzyaloshinskii-Moriya interaction and chiral nature of Graphene/Cobalt interface
• Large spin current generation by the spin Hall effect in mixed crystalline phase Ta thin films
• Spin-orbit coupling in fluorinated graphene
• Dynamic Spin Injection into Chemical Vapor Deposited Graphene
• Low-Damage High-Throughput Grazing-Angle Sputter Deposition on Graphene
• Correlation between Dzyaloshinskii Moriya interaction and spin mixing conductance at antiferromagnet / ferromagnet interface
• Towards an ideal graphene-based spin-filter

Cited by in corpus (9)

• Large spin-to-charge conversion at the two-dimensional interface of transition metal dichalcogenides and permalloy
• Lifshitz phase transitions in one-dimensional Gamma model
• Chiral skyrmion auto-oscillations in a ferromagnet under spin transfer torque
• Applications of Nanomagnets as Dynamical Systems
• Direct measurement of interfacial Dzyaloshinskii-Moriya interaction at the MoS${}_2$/Ni${}_{80}$Fe${}_{20}$ interface
• Room-temperature surface multiferroicity in Y${}_2$NiMnO${}_6$ nanorods
• Nonmonotonic magnetic field dependence of remanent ferroelectric polarization in reduced-graphene-oxide-BiFeO${}_3$ nanocomposite
• Engineering spin-wave spectrum via the magnetization inertia tensor
• Giant mode splitting of azimuthal spin waves in radial vortices