Dzyaloshinskii-Moriya-type interaction and Lifshitz invariant in Rashba 2D electron gas systems

Abstract

The origin of chiral magnetic structures in ultrathin films of magnetic metals is analyzed. It is shown that the Lifshitz-type invariant term in the macroscopic thermodynamic potential can be derived from spin-orbit Rashba Hamiltonian in two dimensional electron gas (2DEG). The former is the prerequisite for existence of spin cycloid, skyrmions and other chiral phenomena observed in thin films. The estimation of the period of spin cycloid gives the value of an order of 10 nm that agrees well with the results of scanning probe microscopy observation reported in the literature.

References in corpus (8)

• Current-driven dynamics of chiral ferromagnetic domain walls
• Role of the Dzyaloshinskii-Moriya interaction in multiferroic perovskites
• Dynamics of Dzyaloshinskii domain walls in ultrathin magnetic films
• Magnetic structures and reorientation transitions in noncentrosymmetric uniaxial antiferromagnets
• Twisted exchange interaction between localized spins embedded in a one- or two-dimensional electron gas with Rashba spin-orbit coupling
• Electric Control of Spin Currents and Spin-Wave Logic
• Electric polarization of magnetic textures: new horizons of micromagnetism
• Multi-shell contribution to the Dzyaloshinskii-Moriya spiralling in MnSi-type crystals

Cited by in corpus (7)

• Femtosecond control of electric currents at the interfaces of metallic ferromagnetic heterostructures
• Spin flexoelectricity and chiral spin structures in magnetic films
• Chiral magnetoresistance in Pt/Co/Pt zigzag wires
• Non-collinear ground state from a four-spin chiral exchange in a tetrahedral magnet
• Light-induced Dzyaloshinskii-Moriya interactions in antiferromagnetic metals
• Dzyaloshinskii-Moriya spin density by skew scattering
• Signatures of quartic asymmetric exchange in a class of two dimensional magnets