Energetics of Quantum Antidot States in Quantum Hall Regime

TL;DR

This paper investigates the energy structure of quantum antidot states in the quantum Hall regime, revealing the dominance of interelectron interactions and providing a model for energy spacing and edge dynamics.

Contribution

It introduces a simple model to determine antidot energy spacing, edge electric field, and excitation drift velocity from experimental data.

Findings

Interelectron interactions dominate the energy structure.

Resonant tunneling line widths vary with temperature.

Model-derived parameters match experimental observations.

Abstract

We report experiments on the energy structure of antidot-bound states. By measuring resonant tunneling line widths as function of temperature, we determine the coupling to the remote global gate voltage and find that the effects of interelectron interaction dominate. Within a simple model, we also determine the energy spacing of the antidot bound states, self consistent edge electric field, and edge excitation drift velocity.