0 Ju n 20 04 Can Quasi - Particles Tunnel Through A Barrier ?
نویسنده
چکیده
This is a qualitative description of a systematic analysis carried out by us . We address the question of whether fractionally charged particles, in the context of the fractional quantum Hall effect (FQHE) can tunnel through a potential barrier (around which the density of the quantum Hall liquid is practically zero). Setting the barrier in a multiply-connected FQHE geometry removes the ”global constraint” which prohibits such tunnelling. We have performed a microscopic analysis of adiabatic charge pumping and tunnelling in a torus geometry. Below we summarize our analysis in semi-qualitative terms. We also propose a setup– different from the torus geometry– amenable to experimental verification.
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تاریخ انتشار 2004