Published February 2005 | Version v1
Journal article Metadata-only

Wave packet in a two-dimensional hexagonal crystal

Creators

  • 1. Department of Physics, Northwest Normal University, Lanzhou 730070 (China)
  • 2. Department of Mathematics, University of Strathclyde, Glasgow G1 1XH (United Kingdom)

Description

The propagation of a nonlinear wave packet of dust lattice waves (DLW) in a two-dimensional hexagonal crystal is investigated. The dispersion relation and the group velocity for DLW are found for longitudinal m and transverse n propagation directions. The reductive perturbation method is used to derive a (2+1)-dimensional nonlinear Schroedinger equation (NLSE) that governs the weakly nonlinear propagation of the wave packet. This NLSE is used to investigate the modulational instability of the packet of DLW. It is found that the instability region is different for different propagation directions

Additional details

Identifiers

DOI
10.1063/1.1850922;

Publishing Information

Journal Title
Physics of Plasmas
Journal Volume
12
Journal Issue
2
Journal Page Range
p. 022106-022106.7
ISSN
1070-664X
CODEN
PHPAEN

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
37014327
Subject category
S70: PLASMA PHYSICS AND FUSION TECHNOLOGY; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
CRYSTALS; DISPERSION RELATIONS; DUSTS; NONLINEAR PROBLEMS; PERTURBATION THEORY; PLASMA INSTABILITY; SCHROEDINGER EQUATION; TWO-DIMENSIONAL CALCULATIONS; WAVE PACKETS; WAVE PROPAGATION
Descriptors DEC
DIFFERENTIAL EQUATIONS; EQUATIONS; INSTABILITY; PARTIAL DIFFERENTIAL EQUATIONS; WAVE EQUATIONS

Optional Information

Notes
(c) 2005 American Institute of Physics