Zobrazeno 1 - 10
of 670
pro vyhledávání: '"C. Reichhardt"'
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-12 (2022)
Abstract The widely used susceptible-infected-recovered (S-I-R) epidemic model assumes a uniform, well-mixed population, and incorporation of spatial heterogeneities remains a major challenge. Understanding failures of the mixing assumption is import
Externí odkaz:
https://doaj.org/article/6ed5a598b9984dcfb76195dedf381e3a
Kibble-Zurek mechanism for nonequilibrium phase transitions in driven systems with quenched disorder
Publikováno v:
Communications Physics, Vol 5, Iss 1, Pp 1-7 (2022)
The Kibble-Zurek (KZ) mechanism is traditionally an equilibrium scaling argument that yields an estimate for the density of topological defects in the ordered phase as a function of the quenching rate close to the critical point. Here, the authors sh
Externí odkaz:
https://doaj.org/article/a290e1bc9a6f4603a041a12e513813fc
Autor:
C. Reichhardt, C. J. O. Reichhardt
Publikováno v:
Physical Review Research, Vol 5, Iss 3, p 033221 (2023)
We investigate the topological defect populations for superconducting vortices and magnetic skyrmions on random pinning substrates under driving amplitudes that are swept at different rates or suddenly quenched. When the substrate pinning is sufficie
Externí odkaz:
https://doaj.org/article/54189bf1f9ba4b9bb44c993dc1735d98
Publikováno v:
Physical Review Research, Vol 5, Iss 2, p 021001 (2023)
Reversible to irreversible (R-IR) transitions arise in numerous periodically driven collectively interacting systems that, after a certain number of driving cycles, organize into a reversible state where the particle trajectories repeat during every
Externí odkaz:
https://doaj.org/article/85984a91c90c4128a3cc240af6508344
Publikováno v:
Physical Review Research, Vol 5, Iss 2, p 023008 (2023)
Collective transport properties of a one-dimensional (1D) asymmetric periodic substrate modulated two-dimensional (2D) dusty plasma driven by an unbiased sinusoidal excitation force are investigated using Langevin dynamical simulations. It is discove
Externí odkaz:
https://doaj.org/article/179f24cd8b064e9b80da0a7eabce0dd5
Autor:
C. J. O. Reichhardt, C. Reichhardt
Publikováno v:
Frontiers in Physics, Vol 9 (2021)
We numerically examine the dynamics of individually dragged skyrmions interacting simultaneously with an array of other skyrmions and quenched disorder. For drives just above depinning, we observe a broadband noise signal with a 1/f characteristic, w
Externí odkaz:
https://doaj.org/article/ac80bd83edb644109c84a1bede5fc392
Autor:
C. Reichhardt, C. J. O. Reichhardt
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-3 (2020)
Skyrmions in chiral magnets are a particle-like texture that has been attracting growing interest due to their novel dynamics and possible applications. Here, we discuss the role of disorder and skyrmion-skyrmion interaction in governing their motion
Externí odkaz:
https://doaj.org/article/ad0a9ffd978349a59251fda50c7a6081
Autor:
C. J. O. Reichhardt, C. Reichhardt
Publikováno v:
Physical Review Research, Vol 4, Iss 1, p 013190 (2022)
For an assembly of particles interacting with a two-dimensional periodic substrate, a series of commensuration effects can arise when the number of particles is an integer multiple of the number of substrate minima. Such commensuration effects can ap
Externí odkaz:
https://doaj.org/article/1e8228bb00b4443ca67cb204263bf845
Publikováno v:
Physical Review Research, Vol 4, Iss 1, p 013061 (2022)
We introduce an active matter model composed of sterically interacting particles, which absorb resources from a substrate and move in response to resource gradients. For varied ratios of absorption rate to substrate recovery rate, we find a variety o
Externí odkaz:
https://doaj.org/article/dbeca526a8a144f19cf3832c0e3424d7
Publikováno v:
Scientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
Abstract We demonstrate the use of an external field to stabilize and control defect lines connecting topological monopoles in spin ice. For definiteness we perform Brownian dynamics simulations with realistic units mimicking experimentally realized
Externí odkaz:
https://doaj.org/article/9694b18a4d4c4d40987e7caad5f60980