Negative Dispersion of Lattice Waves in a Two-Dimensional Yukawa
System

Chin. Phys. Lett.

2002, Vol. 19

Issue (8): 1207-1210 DOI:

Original Articles

Negative Dispersion of Lattice Waves in a Two-Dimensional Yukawa System

LIU Yan-Hong;LIU Bin;YANG Si-Ze;WANG Long

Institute of Physics, Chinese Academy of Sciences, Beijing 100080

Cite this article:

LIU Yan-Hong, LIU Bin, YANG Si-Ze et al 2002 Chin. Phys. Lett. 19 1207-1210

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Abstract Collective motion modes existing in a two-dimensional Yukawa system are investigated by molecular dynamics simulation. The dispersion relations of transverse and longitudinal lattice waves obtained for hexagonal lattice are in agreement with the theoretical results. The negative dispersion of the parallel longitudinal wave is demonstrated by the simulation, and is explained by a physical model.

Keywords: 82.70.Dd 52.25.Vy

Published: 01 August 2002

PACS:	82.70.Dd	(Colloids)
	52.25.Vy	(Impurities in plasmas)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2002/V19/I8/01207

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