Quantum Hall line junction with impurities as a multi-slit Luttinger liquid interferometer
Mesoscale and Nanoscale Physics
2009-11-10 v2 Strongly Correlated Electrons
Abstract
We report on quantum interference between a pair of counterpropagating quantum Hall edge states that are separated by a high quality tunnel barrier. Observed Aharonov-Bohm oscillations are analyzed in terms of resonant tunneling between coupled Luttinger liquids that creates bound electronic states between pairs of tunnel centers that act like interference slits. We place a lower bound in the range of 20-40 m for the phase coherence length and directly confirm the extended phase coherence of quantum Hall edge states.
Cite
@article{arxiv.cond-mat/0407641,
title = {Quantum Hall line junction with impurities as a multi-slit Luttinger liquid interferometer},
author = {I. Yang and W. Kang and L. N. Pfeiffer and K. W. Baldwin and K. W. West and Eun-Ah Kim and E. Fradkin},
journal= {arXiv preprint arXiv:cond-mat/0407641},
year = {2009}
}
Comments
4 pages, 3 figures, 1 table