Title :
Peculiarities in the nonlinear electromagnetic response of a thin metal film carrying a strong DC current
Author :
Derev´anko, S.A. ; Tkachev, G.B. ; Yampol´skii, V.A.
Author_Institution :
Inst. of Radiophys. & Electron., Acad. of Sci., Kharkov, Ukraine
Abstract :
The nonlinear interaction of a DC current flowing in a thin metal film with an external AC electromagnetic field is studied theoretically. The nonlinearity is due to the influence of the DC magnetic field and the magnetic field of the wave on the form of the electron trajectories. This magnetodynamic mechanism of nonlinearity is typical for pure metals at low temperatures. We find that such an interaction causes sharp kinks in the temporal dependence of the AC electric field at the surface of a sample. The phenomenon of amplification of the electromagnetic signal at the metal surface is also predicted.
Keywords :
cryogenic electronics; electromagnetic waves; metallic thin films; amplification; electromagnetic signal; electron trajectories; external AC electromagnetic field; magnetodynamic mechanism; metal surface; nonlinear electromagnetic response; nonlinear interaction; nonlinearity; strong DC current; temporal dependence; thin metal film; Charge carriers; Conductivity; Electric fields; Electromagnetic fields; Electromagnetic scattering; Electrons; Magnetic fields; Magnetic films; Plasma properties; Plasma waves;
Conference_Titel :
Mathematical Methods in Electromagnetic Theory, 2000. MMET 2000. International Conference on
Conference_Location :
Kharkov, Ukraine
Print_ISBN :
0-7803-6347-7
DOI :
10.1109/MMET.2000.888605
