Magnetic ratchet effects in a two-dimensional electron gas

The effect of the magnetic field on the generation of an electric current in a two-dimensional electronic ratchet is theoretically studied. Mechanisms of the formation of magnetically induced photocurrent are proposed for a structure with a two-dimensional electron gas (quantum well, graphene, or to...

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Bibliographic Details
Published in:JETP letters 2016-11, Vol.104 (9), p.649-656
Main Authors: Budkin, G. V., Golub, L. E., Ivchenko, E. L., Ganichev, S. D.
Format: Article
Language:English
Subjects:
Atomic
Biological and Medical Physics
Biophysics
Electric currents
Electron gas
Ferromagnetism
Graphene
Magnetic fields
Molecular
Optical and Plasma Physics
Particle and Nuclear Physics
Photoelectric effect
Photoelectric emission
Physics
Physics and Astronomy
Quantum Information Technology
Quantum wells
Scientific Summaries
Solid State Physics
Spintronics
Superlattices
Topological insulators
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Summary:The effect of the magnetic field on the generation of an electric current in a two-dimensional electronic ratchet is theoretically studied. Mechanisms of the formation of magnetically induced photocurrent are proposed for a structure with a two-dimensional electron gas (quantum well, graphene, or topological insulator) with a lateral asymmetric superlattice consisting of metallic strips on the external surface of the structure. The ratchet with the spatially oscillating magnetic field generated by the ferromagnetic lattice, as well as the nonmagnetic ratchet placed in the uniform magnetic field both classically weak and strong quantizing, is considered. It is established that the ratio of the amplitude of the magnetic oscillations of photocurrent to the ratchet photocurrent in zero field can exceed two orders of magnitude.
ISSN:0021-3640
1090-6487
DOI:10.1134/S0021364016210074