Metals

Nonlinear dopplerons in semimetals

V. G. Skobov^a, A. S. Chernov<sup>b

a</sup> Saint Petersburg Electrotechnical University "LETI"
^b National Engineering Physics Institute "MEPhI", Moscow

Abstract: The possibility of the nonlinear wave propagation occurring in semimetals in the geometry where a constant magnetic field $\mathbf{H}$ is directed along the trigonal axis of the crystal has been investigated theoretically. In the linear regime in this geometry, there is a strong magnetic Landau damping without the wave propagation. It has been shown that the electron trapping by the magnetic field of a large-amplitude radio-frequency wave decreases the efficiency of this damping. As a result, nonlinear dopplerons can propagate in arsenic and, possibly, in antimony.

Received: 30.12.2013

 English version: Physics of the Solid State, 2014, 56:9, 1719–1725

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