Journal article
Superdiffusion of two-dimensional Yukawa liquids due to a perpendicular magnetic field
Physical review. E, Statistical, nonlinear, and soft matter physics, Vol.90(1), pp.013105-013105
07/2014
DOI: 10.1103/PhysRevE.90.013105
PMID: 25122399
Abstract
Stochastic transport of a two-dimensional (2D) dusty plasma liquid with a perpendicular magnetic field is studied. Superdiffusion is found to occur especially at higher magnetic fields with 𝛽 of order unity. Here, 𝛽=𝜔𝑐/𝜔𝑝𝑑 is the ratio of the cyclotron and plasma frequencies for dust particles. The mean-square displacement MSD=4𝐷𝛼𝑡𝛼 is found to have an exponent 𝛼>1, indicating superdiffusion, with 𝛼 increasing monotonically to 1.1 as 𝛽 increases to unity. The 2D Langevin molecular dynamics simulation used here also reveals that another indicator of random particle motion, the velocity autocorrelation function, has a dominant peak frequency 𝜔peak that empirically obeys 𝜔2 peak=𝜔2 𝑐+𝜔2 𝑝𝑑/4.
Details
- Title: Subtitle
- Superdiffusion of two-dimensional Yukawa liquids due to a perpendicular magnetic field
- Creators
- Yan Feng - Los Alamos National LaboratoryJ Goree - University of IowaBin Liu - University of IowaT. P Intrator - Los Alamos National LaboratoryM. S Murillo - Los Alamos National Laboratory
- Resource Type
- Journal article
- Publication Details
- Physical review. E, Statistical, nonlinear, and soft matter physics, Vol.90(1), pp.013105-013105
- DOI
- 10.1103/PhysRevE.90.013105
- PMID
- 25122399
- NLM abbreviation
- Phys Rev E Stat Nonlin Soft Matter Phys
- ISSN
- 1539-3755
- eISSN
- 1550-2376
- Publisher
- American Physical Society
- Grant note
- DOI: 10.13039/100000015, name: U.S. Department of Energy, award: W-7405-ENG-36; DOI: 10.13039/100000001, name: National Science Foundation, award: 1162645
- Language
- English
- Date published
- 07/2014
- Academic Unit
- Physics and Astronomy; Mechanical Engineering
- Record Identifier
- 9984199954602771
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