Spin-injection terahertz radiation in bilayer epitaxial magnetic planar nanostructures

The generation of electromagnetic THz waves by a current is experimentally investigated in planar structures comprised of two ferromagnetic films. When the films come into contact with a thin copper rod, the current is applied to both layers. The first layer, which plays the role of an injector, pol...

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Bibliographic Details
Published in:Bulletin of the Russian Academy of Sciences. Physics 2014-02, Vol.78 (2), p.128-130
Main Authors: Zilberman, P. E., Malikov, I. V., Mikhailov, G. M., Chigarev, S. G., Epstein, E. M.
Format: Article
Language:English
Subjects:
Bilayers
Current carriers
Ferromagnetic films
Ferromagnetic materials
Hadrons
Heavy Ions
Nuclear Physics
Physics
Physics and Astronomy
Planar structures
Population inversion
Proceedings of the 22nd International Conference “What’s New in Magnetism and Magnetic Materials”
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Summary:The generation of electromagnetic THz waves by a current is experimentally investigated in planar structures comprised of two ferromagnetic films. When the films come into contact with a thin copper rod, the current is applied to both layers. The first layer, which plays the role of an injector, polarizes the spins of the current carriers. In the second working layer, the conditions are created for spin population inversion and the generation of THz waves. At a current of 350 mA, the radiation wavelength is 16.4 THz and a power of 10 mW is reached at room temperature.
ISSN:1062-8738
1934-9432
DOI:10.3103/S1062873814020270