Rashba-type Dzyaloshinskii-Moriya interaction, perpendicular magnetic anisotropy and skyrmion states at 2D materials/Co interfaces
arXiv:2105.09015 · doi:10.1021/acs.nanolett.1c01713
Abstract
We report a significant Dzyaloshinskii-Moriya interaction (DMI) and perpendicular magnetic anisotropy (PMA) at interfaces comprising hexagonal boron nitride (h-BN) and Co. By comparing the behavior of these phenomena at graphene/Co and h-BN/Co interfaces, it is found that the DMI in latter increases as a function of Co thickness and beyond three monolayers stabilizes with one order of magnitude larger values compared to those at graphene/Co, where the DMI shows opposite decreasing behavior. At the same time, the PMA for both systems shows similar trends with larger values for graphene/Co and no significant variations for all thickness ranges of Co. Furthermore, using micromagnetic simulations we demonstrate that such significant DMI and PMA values remaining stable over large range of Co thickness give rise to formation of skyrmions with small applied external fields in the range of 200-250 mT up to 100 K temperatures. These findings open up further possibilities towards integrating two-dimensional (2D) materials in spin-orbitronics devices.
arXiv comment16 pages, 4 figures
References in corpus (28)
- Experimental Observation of Quantum Hall Effect and Berry's Phase in Graphene
- Magnetic 2D materials and heterostructures
- Graphene Spintronics
- Graphene -- Based Nanocomposites as Highly Efficient Thermal Interface Materials
- Additive interfacial chiral interaction in multilayers for stabilization of small individual skyrmion at room temperature
- Skyrmions at room temperature : From magnetic thin films to magnetic multilayers
- Dynamics of Dzyaloshinskii domain walls in ultrathin magnetic films
- Room temperature chiral magnetic skyrmion in ultrathin magnetic nanostructures
- Emergent Phenomena Induced by Spin-Orbit Coupling at Surfaces and Interfaces
- Interface-Induced Phenomena in Magnetism
- Tunable Room Temperature Magnetic Skyrmions in Ir/Fe/Co/Pt Multilayers
- Magnetic Correlations at Graphene Edges
- Anatomy of Dzyaloshinskii-Moriya Interaction at Co/Pt Interfaces
- Magnetism in Disordered Graphene and Irradiated Graphite
- Magnetic Insulator-Induced Proximity Effects in Graphene: Spin Filtering and Exchange Splitting Gaps
- Topological Frustration in Graphene Nanoflakes: Magnetic Order and Spin Logic Devices
- Significant Dzyaloshinskii-Moriya Interaction at Graphene-Ferromagnet Interfaces due to Rashba-effect
- Controlling Dzyaloshinskii-Moriya Interaction via Chirality Dependent Layer Stacking, Insulator Capping and Electric Field
- Anisotropic spin relaxation in graphene
- Chirality from interfacial spin-orbit coupling effects in magnetic bilayers
- Path to collapse for an isolated Néel skyrmion
- Anatomy and giant enhancement of the perpendicular magnetic anisotropy of cobalt-graphene heterostructures
- Tailoring magnetic insulator proximity effects in graphene: First-principles calculations
- Graphene spintronics: the role of ferromagnetic electrodes
- Anatomy of perpendicular magnetic anisotropy in Fe/MgO magnetic tunnel junctions: First principles insight
- Unravelling Dzyaloshinskii-Moriya interaction and chiral nature of Graphene/Cobalt interface
- Electric dipole moment as descriptor for interfacial Dzyaloshinskii-Moriya interaction
- Intrinsic mixed Bloch-Néel character and chirality switch of skyrmions in asymmetric epitaxial trilayer
Cited by in corpus (7)
- Strain-Driven Zero-Field Near-10 nm Skyrmions in Two-Dimensional van der Waals Heterostructures
- From Early Theories of Dzyaloshinskii-Moriya Interactions in Metallic Systems to Today's Novel Roads
- Gradient-induced Dzyaloshinskii-Moriya interaction
- Stabilization and helicity control of hybrid magnetic skyrmion
- Nature of Interfacial Dzyaloshinskii-Moriya Interactions in Graphene/Co/Pt(111) Multilayer Heterostructures
- Evidence of Strong Dzyaloshinskii-Moriya Interaction at the Cobalt/Hexagonal Boron Nitride Interface
- Weyl semimetallic, Néel, spiral, and vortex states in the Rashba-Hubbard model