Abstract

Excitation of Nonlineary Second Sound Waves in Solids

V.Khodusov (Department of Physics and Technology, Kharkov National University, Kharkov, Ukraine)

e-mail: khodusov@pem.kharkov.ua

If the energy of phonons depends on parameters of the medium, which can be adiabatically changes by external fields, the resonance exsitation of second sound waves by these fields is possible [1]. An equation describing the resonance excitation of nonlinear second sound waves by external fields has been obtained from nonlinear equation of phonon hydrodynamics for the one-dimentional case. In the absence of external fields we come to the generalized Burgers equation. Resonance excitation of nonlinear second sound waves by external alternating space-periodical electrical field is considered by the example of piezoelectrics including ten types of material in which pyroelectricity can emerge. References: 1. A.I. Akhiezer, V.F. Aleksin, V.D. Khodusov. Gasdynamics of quasi-particles.//Low Temp.Phys. 1994, v.20, no. 12, pp.939-970.

Section : 2