How to suppress the backscattering of conduction electrons?
Department of Applied and Theoretical Physics, Novosibirsk State Technical University Karl Marx Avenue 20, 630073 Novosibirsk, Russia
Received: 29 May 2014
Accepted: 11 August 2014
It is shown theoretically that the strong coupling of electrons to a high-frequency electromagnetic field results in the nulling of electron backscattering within the Born approximation. The conditions of the effect depend only on field parameters and do not depend on the concrete form of the scattering potential. As a consequence, this phenomenon is of universal physical nature and can take place in various conducting systems. Since the suppression of electron backscattering results in decreasing electrical resistance, the solved quantum-mechanical problem opens a new way to control electronic transport properties of conductors by a laser-generated field. Particularly, the elaborated theory is applicable to nanostructures exposed to a strong monochromatic electromagnetic wave.
PACS: 72.10.-d – Theory of electronic transport; scattering mechanisms / 03.65.Nk – Scattering theory
© EPLA, 2014