Ab-initio spin dynamics applied to nanoparticles: canted magnetism of a finite Co chain along a Pt(111) surface step edge

Abstract

In order to search for the magnetic ground state of surface nanostructures we extended first principles adiabatic spin dynamics to the case of fully relativistic electron scattering. Our method relies on a constrained density functional theory whereby the evolution of the orientations of the spin-moments results from a semi-classical Landau-Lifshitz equation. This approach is applied to a study of the ground state of a finite Co chain placed along a step edge of a Pt(111) surface. As far as the ground state spin orientation is concerned we obtain excellent agreement with the experiment. Furthermore we observe noncollinearity of the atom-resolved spin and orbital moments. In terms of magnetic force theorem calculations we also demonstrate how a reduction of symmetry leads to the existence of canted magnetic states.

arXiv comment4 pages, ReVTeX + 3 figures (Encapsulated Postscript), submitted to PRL

References in corpus (3)

• Fully relativistic calculation of magnetic properties of Fe, Co and Ni adclusters on Ag(100)
• From the bulk to monatomic wires: An ab-initio study of magnetism in Co systems with various dimensionality
• Anomalous Ferromagnetism of Monatomic Co Wire at the Pt(111) Surface Step Edge

Cited by in corpus (16)

• A method for atomistic spin dynamics simulations: implementation and examples
• Dzyaloshinskii-Moriya interaction and chiral magnetism in 3$d$-5$d$ zig-zag chains: Tight-binding model and ab initio calculations
• Role of Dzyaloshinskii-Moriya interaction for magnetism in transition-metal chains at Pt step-edges
• Magnetic structure of Fe, Mn, and Cr clusters supported on Cu(111)
• First principles calculation of spin-interactions and magnetic ground states of Cr trimers on Au(111)
• Prospect for room temperature tunneling anisotropic magnetoresistance effect: density of states anisotropies in CoPt systems
• Magnetic structure of monatomic Fe chains on Re(0001): emergence of chiral multi-spin interactions
• Magnetic properties of single atoms of Fe and Co on Ir(111) and Pt(111)
• Structurally-driven magnetic state transition of biatomic Fe chains on Ir(001)
• Langevin spin dynamics based on ab initio calculations: numerical schemes and applications
• Simulation of a spin-wave instability from atomistic spin dynamics
• Theoretical study of magnetic domain walls through a cobalt nanocontact
• Real-space nonlocal Gilbert damping from exchange torque correlation applied to bulk ferromagnets and their surfaces
• Spin dynamics from a constrained magnetic Tight-Binding model
• Magnetic ground state of supported monatomic Fe chains from first principles
• Electronic and Magnetic Properties of Building Blocks of Mn and Fe Atomic Chains on Nb(110)