Peculiarities in the nonlinear electromagnetic response of a thin metal film carrying a strong DC current

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 magnetodynami...

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Bibliographic Details
Main Authors: Derev'anko, S.A., Tkachev, G.B., Yampol'skii, V.A.
Format: Conference Proceeding
Language:English
Subjects:
Charge carriers
Conductivity
Electric fields
Electromagnetic fields
Electromagnetic scattering
Electrons
Magnetic fields
Magnetic films
Plasma properties
Plasma waves
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Summary: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.
DOI:10.1109/MMET.2000.888605