RESONANT-TUNNELING BETWEEN EDGE STATES IN MESOSCOPIC WIRES

We report measurements of the magnetoresistance of long (> 50 mum), na rrow (< 1 mum) quantum wires fabricated from a high mobility two-dimen sional electron gas. We observe that, at low filling factors, the Shub nikov-de Haas oscillations split into a series of sharp peaks which we attribute to resonant tunnelling between edge states through localize d states in the bulk. The results are in excellent agreement with the theoretical model of Jain and Kivelson.