Matches in SemOpenAlex for { <https://semopenalex.org/work/W594598488> ?p ?o ?g. }
- W594598488 abstract "We study diffusion in ratchet systems. As a particular experimental realization we consider an asymmetric SQUID subjected to an external ac current and a constant magnetic flux. We analyze mean-square displacement of the Josephson phase and find that within selected parameter regimes it evolves in three distinct stages: initially as superdiffusion, next as subdiffusion, and finally as normal diffusion in the asymptotic long-time limit. We show how crossover times that separates these stages can be controlled by temperature and an external magnetic flux. The first two stages can last many orders longer than characteristic time scales of the system, thus being comfortably detectable experimentally. The origin of abnormal behavior is noticeable related to the ratchet form of the potential revealing an entirely new mechanism of emergence of anomalous diffusion. Moreover, a normal diffusion coefficient exhibits nonmonotonic dependence on temperature leading to an intriguing phenomenon of thermal noise suppressed diffusion. The proposed setup for experimental verification of our findings provides a new and promising testing ground for investigating anomalies in diffusion phenomena." @default.
- W594598488 created "2016-06-24" @default.
- W594598488 creator A5026789708 @default.
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- W594598488 date "2015-06-04" @default.
- W594598488 modified "2023-10-01" @default.
- W594598488 title "Diffusion anomalies in ac-driven Brownian ratchets" @default.
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- W594598488 doi "https://doi.org/10.1103/physreve.91.062104" @default.
- W594598488 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/26172658" @default.
- W594598488 hasPublicationYear "2015" @default.
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