3 papers
cond-mat.dis-nn2026
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…
cond-mat.dis-nn2025
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…
quant-ph2024
Application of Langevin Dynamics to Advance the Quantum Natural Gradient Optimization Algorithm
Oleksandr Borysenko, Mykhailo Bratchenko, Ilya Lukin +4
A Quantum Natural Gradient (QNG) algorithm for optimization of variational quantum circuits has been proposed recently. In this study, we employ the Langevin equation with a QNG st…