title: Wave modes in shear-deformed two-dimensional plasma crystals.
abstract: A theory of wave modes in shear-deformed two-dimensional plasma crystals is presented. Modification of the dispersion relations upon the pure and simple shear, and the resulting effect on the onset of the mode-coupling instability, are studied. In particular, it is explained why the velocity fluctuation spectra measured in experiments with sheared crystals exhibit asymmetric "hot spots": It is shown that the coupling of the in-plane compressional and the out-of-plane modes, leading to the formation of an unstable hybrid mode and generation of the hot spots, is enhanced in a certain direction determined by deformation.
authors.affiliation: Max-Planck-Institut für Extraterrestrische Physik, 85741 Garching, Germany.
authors.forename: A V
authors.initials: AV
authors.lastname: Ivlev
authors.affiliation: Max-Planck-Institut für Extraterrestrische Physik, 85741 Garching, Germany.
authors.forename: T B
authors.initials: TB
authors.lastname: Röcker
authors.affiliation: CNRS, Aix Marseille Université, Laboratoire PIIM, 13397 Marseille Cedex 20, France.
authors.forename: L
authors.initials: L
authors.lastname: Couëdel
authors.affiliation: Forschungsgruppe Komplexe Plasmen, Deutsches Zentrum für Luft- und Raumfahrt, 82234 Weßling, Germany.
authors.forename: V
authors.initials: V
authors.lastname: Nosenko
authors.affiliation: College of Science, Donghua University, Shanghai 201620, People's Republic of China.
authors.forename: C-R
authors.initials: CR
authors.lastname: Du