Giant magnetic anisotropy of transition-metal dimers on defected graphene

Abstract

Continuous miniaturization of magnetic units in spintronics and quantum computing devices inspires efforts to search for magnetic nanostructures with large magnetic anisotropy energy (MAE). Typical nanostructures including molecular magnets, magnetic nanoclusters and magnetic nanowires have MAEs of a few meV so their blocking temperature is mostly lower than 50 K. In this work, we demonstrated the feasibility of achieving giant MAE in systems with transition metal dimers on defected and decorated graphene, based on density functional theory calculations. In particular, either a Pt-Ir dimer on a single vacancy or an Os-Ru dimer on a nitrogen-decorated divacancy possesses an MAE larger than 60 meV and high structural stability. Interestingly, their magnetic anisotropy can be conveniently manipulated by using external electric field. These features make them good candidates for the use in room temperature spintronics and quantum computing devices.

References in corpus (4)

• Control of the magnetism and magnetic anisotropy of a single-molecule magnet with an electric field
• Metal adatoms on graphene and hexagonal boron nitride: Towards the rational design of self-assembly templates
• Graphene as a reversible spin manipulator of molecular magnets
• CoIr-carbon complexes with magnetic anisotropies larger than 0.2 eV: a density-functional-theory prediction

Cited by in corpus (22)

• Interplay between Kitaev interaction and single ion anisotropy in ferromagnetic CrI${}_3$ and CrGeTe${}_3$ monolayers
• Critical behavior of the van der Waals bonded ferromagnet Fe${}_{3-x}$GeTe${}_2$
• Voltage-Controllable Colossal Magnetocrystalline Anisotropy in Single Layer Transition Metal Dichalcogenides
• Giant magnetic anisotropy of Co, Ru, and Os adatoms on MgO (001) surface
• Anomalous Hall effect in van der Waals bonded ferromagnet Fe${}_{3-x}$GeTe${}_2$
• Critical behavior of quasi-two-dimensional weak itinerant ferromagnet trigonal chromium telluride Cr${}_{0.62}$Te
• Chern Half Metals: A New Class of Topological Materials to Realize the Quantum Anomalous Hall Effect
• Graphene Lattices with Embedded Transition-Metal Atoms and Tunable Magnetic Anisotropy Energy: Implications for Spintronic Devices
• Giant perpendicular magnetic anisotropy in Fe/III-V nitride thin films
• Magnetic anisotropy of FePt nanoparticles
• Slow Spin Relaxation in Single Endohedral Fullerene Molecules
• Room-temperature superparamagnetism due to giant magnetic anisotropy in Mo${}_S$ defected single-layer MoS${}_2$
• Large Perpendicular Magnetocrystalline Anisotropy at Fe/Pb(001) interface
• Hubbard pair cluster in the external fields. Studies of the polarization and susceptibility
• Engineering giant magnetic anisotropy in single-molecule magnets by dimerizing heavy transition-metal atoms
• Giant magnetic anisotropy energy and long coherence time of uranium substitution on defected Al2O3(0001)
• Association Between Gold Grain Orientation And Its Periodic Steps Formed At The Gold/Substrate Interface
• First-principles study of electronic and magnetic properties of Fe atoms on Cu2N/Cu(100)
• Magnetic ground state and strain-mediated chiral-like atomic distortions behavior in two-dimensional rectangular spin lattice
• Magnetism and Magnetic Anisotropy of Transition Metal-Phthalocyanine Molecules
• 3d-oxide molecules to tailor large magnetic anisotropy energies on MgO films
• Coverage-dependent magnetic and electronic properties of graphene with Co adatoms