34 citations · 119 across the 24 of their papers we have counts for
25 papers
Skyrmion gears: translation-to-rotation conversion of skyrmion clusters along periodic substrates
N. P. Vizarim, C. J. O. Reichhardt, C. Reichhardt
We investigate how the translational motion of a compact skyrmion cluster can be converted into collective rotation through interactions with a periodic obstacle substrate. Using a…
Skyrmion behavior in attractive-repulsive square array of pinning centers
L. Basseto, N. P. Vizarim, J. C. Bellizotti Souza +1
We investigate the driven dynamics of a single skyrmion in a square lattice of mixed pinning sites, where attractive and repulsive defects coexist using a particle-based model. The…
Many-body skyrmion interactions in helimagnets
N. P. Vizarim, J. C. Bellizotti Souza, Raí M. Menezes +3
Many-body interactions strongly influence the structure, stability, and dynamics of condensed-matter systems, from atomic lattices to interacting quasi-particles such as supercondu…
Diode Effect for Skyrmions Interacting with Linear Protrusion Defects
J. C. Bellizotti Souza, C. J. O. Reichhardt, C. Reichhardt +2
We simulate collectively interacting skyrmions in a channel with periodic asymmetry, and find a strong diode effect for the skyrmion flow. There is also an asymmetry in the skyrmio…
Ordered and Disordered Skyrmion States on a Square Substrate
J. C. Bellizotti Souza, C. J. O. Reichhardt, C. Reichhardt +2
We examine the ordering of skyrmions interacting with a square substrate created from a modulation of anisotropy using atomistic simulations. We consider fillings of {\it f} = 1.5,…
Sliding Dynamics of Skyrmion Molecular Crystals
J. C. Bellizotti Souza, C. J. O. Reichhardt, C. Reichhardt +2
Using both atomistic and particle-based simulations, we investigate the current-driven dynamics of skyrmions on two-dimensional periodic substrates when there are multiple skyrmion…
Skyrmion-Skyrmionium Phase Separation and Laning Transitions via Spin-Orbit Torque Currents
N. P. Vizarim, J. C. Bellizotti Souza, C. J. O. Reichhardt +3
Many driven binary systems can exhibit laning transitions when the two species have different mobilities, such as colloidal particles with opposite charges in electric fields. Anot…
Topological Transitions, Pinning and Ratchets for Driven Magnetic Hopfions in Nanostructures
J. C. Bellizotti Souza, C. J. O. Reichhardt, C. Reichhardt +3
Using atomistic simulations, we examine the dynamics of three-dimensional magnetic hopfions interacting with an array of line defects or posts as a function of defect spacing, defe…
Skyrmionium Dynamics and Stability on One Dimensional Anisotropy Patterns
J. C. Bellizotti Souza, N. P. Vizarim, C. J. O. Reichhardt +2
We examine a skyrmionium driven over a periodic anisotropy pattern, which consists of disorder free regions and disordered regions. For small defect densities, the skyrmionium flow…
Comparing Dynamics, Pinning and Ratchet Effects for Skyrmionium, Skyrmions, and Antiskyrmions
J. C. Bellizotti Souza, N. P. Vizarim, C. J. O. Reichhardt +2
We compare the driven dynamics of skyrmions, antiskyrmions, and skyrmionium interacting with random disorder, circular defects, and asymmetric potentials. When interacting with a l…
Skyrmion soliton motion on periodic substrates by atomistic and particle based simulations
J. C. B. Souza, N. P. Vizarim, C. J. O. Reichhardt +2
We compare the dynamical behavior of magnetic skyrmions interacting with square and triangular defect arrays just above commensuration using both an atomistic model and a particle-…
Reversible to Irreversible Transitions for ac Driven Skyrmions on Periodic Substrates
J. C. Bellizotti Souza, N. P. Vizarim, C. J. O. Reichhardt +2
Using atomistic simulations, we investigate the dynamical behavior of magnetic skyrmions in dimer and trimer molecular crystal arrangements, as well as bipartite lattices at 3/2 an…
Skyrmion Molecular Crystals and Superlattices on Triangular Substrates
J. C. Bellizotti Souza, N. P. Vizarim, C. J. O. Reichhardt +2
Using atomistic simulations, we show that new types of skyrmion states called skyrmion molecular crystals and skyrmion superlattices can be realized on triangular substrates when t…
Shapiro Steps and Stability of Skyrmions Interacting with Alternating Anisotropy Under the Influence of ac and dc Drives
J. C. Bellizotti Souza, N. P. Vizarim, C. J. O. Reichhardt +2
We use atomistic simulations to examine the sliding dynamics of a skyrmion in a two-dimensional system containing a periodic one-dimensional stripe pattern of variations between lo…
Controlled Skyrmion Ratchet in Linear Protrusion Defects
J. C. Bellizotti Souza, N. P. Vizarim, C. J. O. Reichhardt +2
Using atomistic simulations, we investigate the dynamical behavior of a single skyrmion interacting with an asymmetric linear protrusion array under external ac driving. When the a…
Skyrmion Transport and Annihilation in Funnel Geometries
F. S. Rocha, J. C. Bellizotti Souza, N. P. Vizarim +3
Using atomistic simulations, we have investigated the transport and annihilation of skyrmions interacting with a funnel array under a current applied perpendicular to the funnel ax…
Soliton motion induced along ferromagnetic skyrmion chains in chiral thin nanotracks
J. C. Bellizotti Souza, N. P. Vizarim, C. J. O. Reichhardt +2
Using atomistic magnetic simulations we investigate the soliton motion along a pinned skyrmion chain containing an interstitial skyrmion. We find that the soliton can exhibit stabl…
Magnus Induced Diode Effect for Skyrmions in Channels with Periodic Potentials
J. C. Bellizotti Souza, N. P. Vizarim, C. J. O. Reichhardt +2
Using a particle based model, we investigate the skyrmion dynamical behavior in a channel where the upper wall contains divots of one depth and the lower wall contains divots of a…
Clogging, Diode and Collective Effects of Skyrmions in Funnel Geometries
J. C. Bellizotti Souza, N. P. Vizarim, C. J. O. Reichhardt +2
Using a particle-based model, we examine the collective dynamics of skyrmions interacting with a funnel potential under dc driving as the skyrmion density and relative strength of…
Soliton Motion in Skyrmion Chains
N. P. Vizarim, J. C. Bellizotti Souza, C. J. O. Reichhardt +3
Using a particle-based model we examine the depinning motion of solitons in skyrmion chains in quasi-one dimensional (1D) and two-dimensional (2D) systems containing embedded 1D in…
Skyrmion Ratchet in Funnel Geometries
J. C. Bellizotti Souza, N. P. Vizarim, C. J. O. Reichhardt +2
Using a particle-based model, we simulate the behavior of a skyrmion under the influence of asymmetric funnel geometries and ac driving at zero temperature. We specifically investi…
Directional Locking and the Influence of Obstacle Density on Skyrmion Dynamics in Triangular and Honeycomb Arrays
N. P. Vizarim, J. C. Bellizotti Souza, C. Reichhardt +2
We numerically examine a single skyrmion dynamics under the influence of triangular and honeycomb obstacle arrays at zero temperature. The skyrmion Hall angle , that is the…
Guided Skyrmion Motion Along Pinning Array Interfaces
N. P. Vizarim, C. Reichhardt, P. A. Venegas +1
We examine ac driven skyrmions interacting with the interface between two different obstacle array structures. We consider drive amplitudes at which skyrmions in a bulk obstacle la…
Skyrmion Dynamics and Transverse Mobility: Skyrmion Hall Angle Reversal on 2D Periodic Substrates with dc and Biharmonic ac Drives
N. P. Vizarim, C. J. O. Reichhardt, P. A. Venegas +1
We numerically examine the dynamics of a skyrmion interacting with a two-dimensional periodic substrate under dc and biharmonic ac drives. We show that the Magnus force of the skyr…