Quasiparticle tunneling through a barrier in the fractional quantum hall regime.
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.
Shopen
Elad
E
Department of Physics, Ben-Gurion University, Beer-Sheva 84105, Israel.
Gefen
Yuval
Y
Meir
Yigal
Y