O. A. Tkachenko, V. A. Tkachenko, Z. D. Kvon, “Photon-assisted electron transport through a quantum point contact in a microwave field”, Pis'ma v Zh. Èksper. Teoret. Fiz., 2015, Volume 102, Issue 6,Pages <nobr>417

This article is cited in 7 papers

CONDENSED MATTER

Photon-assisted electron transport through a quantum point contact in a microwave field

O. A. Tkachenko^a, V. A. Tkachenko^ba, Z. D. Kvon^ab

^a Rzhanov Institute of Semiconductor Physics, Siberian Branch, Russian Academy of Sciences, pr. Akademika Lavrent’eva 13, Novosibirsk, 630090, Russia
^b Novosibirsk State University, ul. Pirogova 2, Novosibirsk, 630090, Russia

Abstract: It has been shown by the numerical solution of the time-dependent Schrödinger equation that the transmittance of an electron through a smooth one-dimensional barrier in a microwave field can increase by orders of magnitude in the tunneling regime and decrease strongly in the open regime. The leading contribution comes from transitions with absorption or emission of a few photons. The discovered effect can explain a recently observed strong increase in the conductance of a quantum point contact under microwave irradiation.

Received: 16.06.2015
Revised: 28.07.2015

DOI: 10.7868/S0370274X15180113