Mode Coupling for Phonons in a Single-Layer Dusty Plasma Crystal

Journal Article · Fri Aug 20 00:00:00 EDT 2010 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.105.085004· OSTI ID:21470979

Bin, Liu; Goree, J; Yan, Feng ^[1]

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1. Department of Physics and Astronomy, The University of Iowa, Iowa City, Iowa 52242 (United States)

New modes in a dusty plasma result from coupling of differently polarized phonons. A single horizontal layer of charged microparticles, confined so that vertical as well as horizontal motions are possible, usually exhibits three modes. An experiment shows that mode coupling leads to a new hybrid mode and another new mode. Coupling also leads to a recently reported hybrid mode and nondispersive mode, shown here to occur in an unmelted lattice. A linear theory based on ion wakes is able to predict some, but not all, of these modes. Other multiphase systems could exhibit similar mode coupling.

• OSTI ID: 21470979
• Journal Information: Physical Review Letters, Vol. 105, Issue 8; Other Information: DOI: 10.1103/PhysRevLett.105.085004; (c) 2010 American Institute of Physics; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
COUPLING
CRYSTALS
DUSTS
IONS
LAYERS
PARTICLES
PHONONS
PLASMA
POLARIZATION
CHARGED PARTICLES
QUASI PARTICLES