• Corpus ID: 238582646

Imaging the controllable rotation of a skyrmion crystal driven by femtosecond laser pulses

  title={Imaging the controllable rotation of a skyrmion crystal driven by femtosecond laser pulses},
  author={Phoebe Tengdin and Benoit Truc and A. A. Sapozhnik and Simone Gargiulo and I. Madan and Thomas Schoenenberger and P. R. Baral and Ping Che and Arnaud Magrez and Dirk Grundler and Henrik M. R{\o}nnow and Thomas B Lagrange and Fabrizio Carbone Institute of Physics and Lumes and 'Ecole polytechnique f'ed'erale de Lausanne and Lausanne and Switzerland. and Institute of Metal Physics and Lqm and Crystallography Facility and Ecole polytechnique f'ed'erale de Lausanne and Institute of Optical Materials and Laboratory of Nanoscale Magnetic Materials and Magnonics},
Control of topological magnetic textures has attracted intense interest due to the potential applications for these structures in spintronic devices. Recent advances in electron microscopy have enabled imaging of individual skyrmions, however the full understanding of their ultrafast dynamics has remained inaccessible. Here we show via cryoLorentz microscopy that a single circularly polarized femtosecond laser pulse can induce controlled rotation of a skyrmion crystal. Pulses of light with an… 

Figures from this paper


Ultrafast non-thermal control of magnetization by instantaneous photomagnetic pulses
It is demonstrated that circularly polarized femtosecond laser pulses can be used to non-thermally excite and coherently control the spin dynamics in magnets by way of the inverse Faraday effect, and offers prospects for applications of ultrafast lasers in magnetic devices.
Ultrafast generation of skyrmionic defects with vortex beams: Printing laser profiles on magnets
Controlling electric and magnetic properties of matter by laser beams is actively explored in the broad region of condensed matter physics, including spintronics and magneto-optics. Here we
Ultrafast optical excitation of magnetic skyrmions
The ultrafast, nonthermal, and local excitation of the spin systems by photons would lead to the efficient manipulation of nano-magnetic structures.
Laser-induced magnetic nanostructures with tunable topological properties.
We report the creation and real-space observation of magnetic structures with well-defined topological properties and a lateral size as low as about 150 nm. They are generated in a thin ferrimagnetic
Thermally driven ratchet motion of a skyrmion microcrystal and topological magnon Hall effect.
The finding that a topologically nontrivial spin texture known as a skyrmion--a particle-like object in which spins point in all directions to wrap a sphere--constitutes such a ratchet is reported, suggesting that magnons can be used to control the motion of these spin textures.
Femtosecond Spin Current Pulses Generated by the Nonthermal Spin-Dependent Seebeck Effect and Interacting with Ferromagnets in Spin Valves.
The demonstrated rotation of spin polarization of hot electrons upon interaction with noncollinear magnetization at Au/Fe interfaces holds high potential for future spintronic devices.
Design and implementation of a fs-resolved transmission electron microscope based on thermionic gun technology
In this paper, the design and implementation of a femtosecond-resolved ultrafast transmission electron microscope is presented, based on a thermionic gun geometry. Utilizing an additional magnetic
Time-resolved visualization of the magnetization canting induced by field-like spin–orbit torques
We report on the use of time-resolved scanning transmission x-ray microscopy imaging for the visualization of the dynamical canting of the magnetization induced by field-like spin–orbit torques in a
Magnetic Skyrmions and Skyrmion Clusters in the Helical Phase of Cu_{2}OSeO_{3}.
Topological quantization, high mobility, and the confinement of Skyrmions in channels provided by the helical background may be useful for future spintronics devices.
Dynamical Defects in Rotating Magnetic Skyrmion Lattices.
It is shown that in an inhomogeneous temperature gradient caused by illumination in a Lorentz transmission electron microscope different parts of the Skyrmion lattice can be set into motion with different angular velocities.