Low Temperature Physics: 34, 853 (2008); https://doi.org/10.1063/1.3006392 (5 pages)
Физика Низких Температур: Том 34, Выпуск 10 (Октябрь 2008), c. 1081-1085    ( к оглавлению , назад )

Microwave induced forward scattering and Luttinger liquid interferences in magnetically confined quantum wires

Alain Nogaret

Department of Physics, University of Bath, Bath BA2 7AY, UK
E-mail: A.R.Nogaret@bath.ac.uk

Jean-Claude Portal

High Magnetic Field Laboratory, 25 Avenue des Martyrs, 38042 Grenoble, France Institut Universitaire de France and INSA, 31077 Toulouse, France

Harvey E. Beere and David A. Ritchie

Cavendish Laboratory, University of Cambridge, CB3 0HE Cambridge, UK

Chris Phillips

Department of Physics, Imperial College, London SW7 2AZ, UK

Received March 31, 2008


We report on the photoresistance of a magnetic quantum wire obtained by applying a gradient of magnetic field to a two-dimensional electron gas. Electron transmission through the magnetic wire increases by an order of magnitude under microwave irradiation and exhibits frequency dependent magneto-oscillations as a function of the in plane magnetic field. Both results are fully consistent with microwave coupled Luttinger liquid edge channels which interfere at two pinning sites in the fashion of a Mach–Zehnder interferometer.

PACS: 73.21.Hb Quantum wires.

Key words: Luttinger liquid, magnetically confined quantum wires, correlated electrons, microwaves.