Interaction-enhanced interference effects in a Luttinger liquid
Department of Applied Physics, Chalmers University of
Technology and Göteborg University - SE-412 96 Göteborg,
2 B. I. Verkin Institute for Low Temperature Physics and Engineering 47 Lenin Avenue, 310164 Kharkov, Ukraine
Accepted: 13 November 2001
Microwave-induced interchannel electron transitions in a Luttinger liquid irradiated by an ac electromagnetic field are considered. It is shown that oscillations in the power absorption caused by the interference of charge transport along the two channels are controlled by the effective coupling strength , which strongly depends on the difference between the Fermi velocities in the channels. Interactions always enhance the interference effects induced by forward-scattering interchannel electron transitions. A novel regime of the statistical behavior of the fluctuations in power absorption is predicted.
PACS: 71.10.Pm – Fermions in reduced dimensions (anyons, composite fermions, Luttinger liquid, etc.) / 71.27.+a – Strongly correlated electron systems; heavy fermions / 85.35.Ds – Quantum interference devices
© EDP Sciences, 2002