Sheared flow of electrons and ions introduces new drift-type modes and instabilities in plasmas with stationary dust

The flow of electrons and ions with the same sheared velocity introduces new type of electrostatic drift waves and instabilities due to non-uniform zero-order current in plasmas having stationary dust. One of the modes is flute-like and the other also includes ions motion parallel to the background magnetic field. This investigation has applications in the phenomena of solar wind interaction with the dusty plasmas of planets and comets. -- Highlights: → Solar wind interaction with dusty plasmas gives rise to new waves and instabilities. → Shear flow is the source of instabilities. → Magnetic field cannot remain homogeneous due to background current.