Nonlinear waves in plastically deformed metals and superconductors at low temperatures

It is shown that two types of waves exist at low temperatures in plastically deformed metals and hard type-II superconductors located in a liquid medium under conditions when heat is released at a definite rate from the samples (as a result of the plastic deformation). Formulas are derived for the velocities and structures of such nonlinear waves. It is shown that a transition from one homogeneous stable solution to another may occur in such a system as the heat-source strength is varied; the kinetics of this transition is entirely similar to the kinetics of the order–disorder phase transition described by the Landau–Khalatnikov equation. Relations connecting the characteristics of the nonlinear waves with the discontinuous plastic deformations induced by the waves are derived.

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