221 citations · 643 across the 15 of their papers we have counts for
11 papers · 1 filter
Skyrmion-Excited Spin Wave Fractal Network
Nan Tang, W. L. N. C. Liyanage, Sergio A. Montoya +9
Magnetic skyrmions exhibit unique, technologically relevant pseudo-particle behaviors which arise from their topological protection, including well-defined, three-dimensional dynam…
Periodicity staircase in a Fe/Gd magnetic thin film
Arnab Singh, Junli Li, Sergio A. Montoya +7
Presence of multiple competing periodicities may result in a system to go through states with modulated periodicities, an example of which is the self-similar staircase-like struct…
On Ultrafast X-ray Methods for Magnetism
Rajan Plumley, Sathya Chitturi, Cheng Peng +36
With the introduction of x-ray free electron laser sources around the world, new scientific approaches for visualizing matter at fundamental length and time-scales have become poss…
Transport properties of dipole skyrmions in amorphous FeGd multilayers
Sergio Montoya, Marko Lubarda, Vitaliy Lomakin
The transport response of dipole skyrmions in amorphous centrosymmetric Fe/Gd multilayer is investigated by temperature and field-dependent resistivity measurements collected in th…
Energy-efficient generation of skyrmion phases in Co/Ni/Pt-based multilayers using Joule heating
Jeffrey A. Brock, Sergio A. Montoya, Mi-Young Im +1
We have studied the effects of electrical current pulses on skyrmion formation in a series of Co/Ni/Pt-based multilayers. Transmission X-ray microscopy reveals that by applying ele…
Direct demonstration of topological stability of magnetic skyrmions via topology manipulation
Soong-Geun Je, Hee-Sung Han, Se Kwon Kim +8
Topological protection precludes a continuous deformation between topologically inequivalent configurations in a continuum. Motivated by this concept, magnetic skyrmions, topologic…
Spin-orbit torque induced dipole skyrmion motion at room temperature
Sergio A. Montoya, Robert Tolley, Ian Gilbert +3
We demonstrate deterministic control of dipole-field-stabilized skyrmions by means of spin-orbit torques arising from heavy transition-metal seed layers. Experiments are performed…
Resonant properties of dipole skyrmions in amorphous Fe/Gd multilayers
S. A. Montoya, S. Couture, J. J. Chess +9
The dynamic response of dipole skyrmions in Fe/Gd multilayer films is investigated by ferromagnetic resonance measurements and compared to micromagnetic simulations. We detail thic…
A streamlined approach to mapping the magnetic induction of skyrmionic materials
Jordan J. Chess, Sergio A. Montoya, Tyler R. Harvey +5
Recently, Lorentz transmission electron microscopy (LTEM) has helped researchers advance the emerging field of magnetic skyrmions. These magnetic quasi-particles, composed of topol…
Tailoring magnetic energies to form dipole skyrmions and skyrmion lattices
S. A. Montoya, S. Couture, J. J. Chess +11
The interesting physics and potential memory technologies resulting from topologically protected spin textures such as skyrmions, has prompted efforts to discover new material syst…
Synthesizing Skyrmion Molecules in Fe-Gd Thin Films
J. C. T Lee, J. J. Chess, S. A. Montoya +9
We show that properly engineered amorphous Fe-Gd alloy thin films with perpendicular magnetic anisotropy exhibit room-temperature skyrmion molecules, or a pair of like-polarity, op…