title: Quasiparticle tunneling through a barrier in the fractional quantum hall regime.
abstract: Tunneling of fractionally charged quasiparticles (QPs) through a barrier is considered in the context of a multiply connected geometry. In this geometry global constraints do not prohibit such a tunneling process. The tunneling amplitude is evaluated and the crossover from mesoscopic QP-dominated to electron-dominated tunneling as the system's size is increased is found. The presence of disorder enhances both electron and QP-tunneling rates.
authors.affiliation: Department of Physics, Ben-Gurion University, Beer-Sheva 84105, Israel.
authors.forename: Elad
authors.initials: E
authors.lastname: Shopen
authors.forename: Yuval
authors.initials: Y
authors.lastname: Gefen
authors.forename: Yigal
authors.initials: Y
authors.lastname: Meir