12 papers
Drift-diffusion interplay in active Brownian particles under orienting field
Andrey A. Kuznetsov, Vittoria Sposini, Sofia S. Kantorovich +1
Magnetic active particles offer a versatile route to externally controlled microscale transport by combining self-propulsion with field-tunable orientation, as realized in both syn…
Genuine and spurious (non-)ergodicity in single particle tracking
Wei Wang, Qing Wei, Igor M. Sokolov +2
In single-particle tracking experiments measuring anomalous diffusion dynamics, understanding ergodicity is crucial, as it ensures that the time average of an observable matches th…
The diffusion equation for non-Markovian Gaussian stochastic processes
Alessandro Taloni, Gianni Pagnini, Aleksei Chechkin
We derive the exact evolution equation for the probability density function of particle displacements generated by arbitrary Gaussian velocity processes, when neither Markovianity…
Stochastic Dynamics of Domain Wall on a Racetrack: Impact of Line-Edge Roughness
Anton V. Hlushchenko, Oksana L. Andrieieva, Mykhailo I. Bratchenko +3
We investigate the impact of line-edge roughness on current-driven domain wall dynamics in ferromagnetic racetracks. Modeling the edge disorder as a spatially correlated Ornstein-U…
Stochastic Dynamics of Skyrmions on a Racetrack: Impact of Equilibrium and Nonequilibrium Noise
Anton V. Hlushchenko, Mykhailo I. Bratchenko, Aleksei V. Chechkin
Current-driven motion of domain walls and skyrmions is central to the operation of non-volatile magnetic memory devices. Racetrack memory requires current densities high enough to…
Different behaviors of diffusing diffusivity dynamics based on three different definitions of fractional Brownian motion
Wei Wang, Aleksei V. Chechkin, Ralf Metzler
The effects of a "diffusing diffusivity" (DD), a stochastically time-varying diffusion coefficient, are explored within the frameworks of three different forms of fractional Browni…