title: Coupled dust-lattice modes in complex plasmas.
abstract: The coupling between transverse and longitudinal dust-lattice modes due to the particle-wake interactions and vertical dust charge gradient is considered. It is shown that the dust-lattice waves can be subjected to a specific instability, the criterion for which has been derived. This instability can explain experimentally observed spontaneous excitation of vibrational modes in a plasma crystal when the pressure is decreased below a critical value.
authors.affiliation: Centre for Interdisciplinary Plasma Science, Max-Planck-Institut für Extraterrestrische Physik, D-85741 Garching, Germany.
authors.forename: V V
authors.initials: VV
authors.lastname: Yaroshenko
authors.forename: A V
authors.initials: AV
authors.lastname: Ivlev
authors.forename: G E
authors.initials: GE
authors.lastname: Morfill