292 citations · 2.9k across the 93 of their papers we have counts for
92 papers
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…
Magnetic Field Effects and Transverse Ratchets in Charge Lattices Coupled to Asymmetric Substrates
C. J. O. Reichhardt, C. Reichhardt
We examine a charge lattice coupled to a one-dimensional asymmetric potential in the presence of an applied magnetic field, which induces gyrotropic effects in the charge motion. T…
Spontaneous Skyrmion Conformal Lattice and Transverse Motion During dc and ac Compression
J. C. Bellizotti Souza, N. P. Vizarim, C. J. O. Reichhardt +2
We use atomistic-based simulations to investigate the behavior of ferromagnetic skyrmions being continuously compressed against a rigid wall under dc and ac drives. The compressed…
Noise and Thermal Depinning of Wigner Crystals
C. Reichhardt, C. J. O. Reichhardt
We examine changes in the depinning threshold and conduction noise fluctuations for driven Wigner crystals in the presence of quenched disorder. At low temperatures there is a well…
Melting, Reentrant Ordering and Peak Effect for Wigner Crystals with Quenched and Thermal Disorder
C. Reichhardt, C. J. O. Reichhardt
We consider simulations of Wigner crystals interacting with random quenched disorder in the presence of thermal fluctuations. When quenched disorder is absent, there is a well defi…
Activated vortex lattice transition in a superconductor with combined sixfold and twelvefold anisotropic interactions
D. Minogue, M. R. Eskildsen, C. Reichhardt +1
Numerical simulations are used to examine the transition dynamics between metastable and ground state vortex lattice phases in a system with combined sixfold and twelvefold contrib…
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…
Driven Superconducting Vortex Dynamics in Systems with Two-Fold Anisotropy in the Presence of Pinning
E. Roe, M. R. Eskildsen, C. Reichhardt +1
We examine the dynamics of superconducting vortices with two-fold anisotropic interaction potentials driven over random pinning and compare the behavior under drives applied parall…
Directed Motion of Liquid Crystal Skyrmions With Oscillating Fields
A. Duzgun, C. Nisoli, C. J. O. Reichhardt +1
Using continuum simulations, we show that under a sinusoidal electric field, liquid crystal skyrmions undergo periodic shape oscillations which produce controlled directed motion.…
Directional Clogging and Phase Separation for Disk Flow Through Periodic and Diluted Obstacle Arrays
C. Reichhardt, C. J. O. Reichhardt
We model collective disk flow though a square array of obstacles as the flow direction is changed relative to the symmetry directions of the array. At lower disk densities there is…
Directional Locking Effects for Active Matter Particles Coupled to a Periodic Substrate
C. Reichhardt, C. J. O. Reichhardt
Directional locking occurs when a particle moving over a periodic substrate becomes constrained to travel along certain substrate symmetry directions. Such locking effects arise fo…
Collective Effects and Pattern Formation for Directional Locking of Disks Moving Through Obstacle Arrays
C. Reichhardt, C. J. O. Reichhardt
We examine directional locking effects in an assembly of disks driven through a square array of obstacles as the angle of drive rotates from zero to ninety degrees. For increasing…
Jamming, Fragility and Pinning Phenomena in Superconducting Vortex Systems
C. Reichhardt, C. J. O. Reichhardt
We examine driven superconducting vortices interacting with quenched disorder where we measure the memory effects under a sequence of drive pulses applied perpendicular to each oth…
Dynamics of Magnus Dominated Particle Clusters, Collisions, Pinning and Ratchets
C. Reichhardt, C. J. O. Reichhardt
Motivated by the recent work in skyrmions and active chiral matter systems, we examine pairs and small clusters of repulsively interacting point particles in the limit where the dy…
Skyrmion Dynamics and Topological Sorting on Periodic Obstacle Arrays
N. P. Vizarim, C. Reichhardt, C. J. O. Reichhardt +1
We examine skyrmions under a dc drive interacting with a square array of obstacles for varied obstacle size and damping. When the drive is applied in a fixed direction, we find tha…
Vortex Guidance and Transport in Channeled Pinning Arrays
C. Reichhardt, C. J. O. Reichhardt
We numerically examine vortices interacting with pinning arrays where a portion of the pinning sites have been removed in order to create coexisting regions of strong and weak pinn…
Colloidal Dynamics on a Choreographic Time Crystal
Andras Libal, Tunde Balazs, C. Reichhardt +1
A choreographic time crystal is a dynamic lattice structure in which the points comprising the lattice move in a coordinated fashion. These structures were initially proposed for u…
Commensurate States and Pattern Switching via Liquid Crystal Skyrmions Trapped in a Square Lattice
A. Duzgun, C. Nisoli, C. J. O. Reichhardt +1
Using continuum based simulations we show that a rich variety of skyrmion liquid crystal states can be realized in the presence of a periodic obstacle array. As a function of the n…
Shear Banding, Intermittency, Jamming and Dynamic Phases for Skyrmions in Inhomogeneous Pinning Arrays
C. Reichhardt, C. J. O. Reichhardt
We examine driven skyrmion dynamics in systems with inhomogeneous pinning where a strip of strong pinning coexists with a region containing no pinning. For driving parallel to the…
Reentrant Pinning, Dynamic Row Reduction, and Skyrmion Accumulation for Driven Skyrmions in Inhomogeneous Pinning Arrays
C. Reichhardt, C. J. O. Reichhardt
We examine the dynamics of skyrmions in systems with a region of strong pinning coexisting with a pin free region, where the equilibrium state has a uniform skyrmion density. Under…
Structural Transitions in Vortex Systems with Anisotropic Interactions
M. W. Olszewski, M. R. Eskildsen, C. Reichhardt +1
We introduce a model of vortices in type-II superconductors with a four-fold anisotropy in the vortex-vortex interaction potential. Using numerical simulations we show that the vor…
Clogging and Jamming Transitions in Periodic Obstacle Arrays
H. T. Nguyen, C. Reichhardt, C. J. Olson Reichhardt
We numerically examine clogging transitions for bidisperse disks flowing through a two dimensional periodic obstacle array. We show that clogging is a probabilistic event that occu…
Collective Transport for Active Matter Run and Tumble Disk Systems on a Traveling Wave Substrate
Cs. Sándor, A. Libál, C. Reichhardt +1
We numerically examine the transport of an assembly of active run-and-tumble disks interacting with a traveling wave substrate. We show that as a function of substrate strength, wa…