Laser-induced torques in spin spirals
arXiv:2011.13707 · doi:10.1103/PhysRevB.103.054403
Abstract
We investigate laser-induced torques in magnetically non-collinear ferromagnets with a spin-spiral magnetic structure using \textit{ab-initio} calculations. Since spin-spirals may be used to approximate the magnetization gradients locally in domain walls and skyrmions, our method may be used to obtain the laser-induced torques in such objects from a multiscale approach. Employing the generalized Bloch-theorem we obtain the electronic structure computationally efficiently. We employ our method to assess the laser-induced torques in bcc Fe, hcp Co, and L FePt when a spin-spiral magnetic structure is imposed. We find that the laser-induced torques in these magnetically noncollinear systems may be orders of magnitude larger than those in the corresponding magnetically collinear systems and that they exist both for linearly and circularly polarized light. This result suggests that laser-induced torques driven by noncollinear magnetic order or by magnetic fluctuations may contribute significantly to processes in ultrafast magnetism.
References in corpus (26)
- Spin Transfer Torques
- Wannier90 as a community code: new features and applications
- Current-induced spin-orbit torques in ferromagnetic and antiferromagnetic systems
- All-optical control of ferromagnetic thin films and nanostructures
- Spectral and Fermi surface properties from Wannier interpolation
- Laser-Induced Magnetic Nanostructures with Tunable Topological Properties
- Femtosecond control of electric currents at the interfaces of metallic ferromagnetic heterostructures
- Creation of Magnetic Skyrmion Bubble Lattices by Ultrafast Laser in Ultrathin Films
- Maximally Localized Wannier Functions within the FLAPW formalism
- Microscopic Calculation of Spin Torques in Disordered Ferromagnets
- Experimental observation of the optical spin transfer torque
- Functional Keldysh Theory of Spin Torques
- Effective gauge field theory of spintronics
- Non-Adiabatic Spin Transfer Torque in Real Materials
- Many-body theory of ultrafast demagnetization and angular momentum transfer in ferromagnetic transition metals
- Laser-induced torques in metallic ferromagnets
- Faster chiral versus collinear magnetic order recovery after optical excitation revealed by femtosecond XUV scattering
- Ultrafast magnetic vortex core switching driven by topological inverse Faraday effect
- Chiral damping, chiral gyromagnetism and current-induced torques in textured one-dimensional Rashba ferromagnets
- Optical spin transfer and spin-orbit torques in thin film ferromagnets
- Intrinsic Spin Torque Without Spin-Orbit Coupling
- Driving spin chirality by electron dynamics in laser-excited antiferromagnets
- Charge pumping driven by the laser-induced dynamics of the exchange splitting
- Optical responses induced by spin gauge field at the second order
- Non-equilibrium heating path for utrafast laser-induced nucleation of skyrmion lattices
- Static transport properties of random alloys: vertex corrections in conserving approximations