Abstract
It is shown that contact electrohydrodynamic waves similar to the waves on an interface between two immiscible liquids can exist on an interface between two identical semiconductors with different concentrations of free charge carriers. When a current flows, instabilities of such waves, particularly an analog of the Kelvin-Helmholtz hydrodynamic instability, appear in one of the layers. The possibility of practical utilization of contact waves interacting with currents is discussed.
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