Contrasting Energy Scales of the Reentrant Integer Quantum Hall States

TL;DR

This paper investigates the temperature-dependent behavior of reentrant integer quantum Hall states in different Landau levels, revealing discrepancies with existing theoretical models and suggesting a need for revised understanding of electron bubble configurations.

Contribution

The study provides experimental evidence showing the onset temperatures of reentrant states differ significantly between Landau levels, challenging current Hartree-Fock bubble phase theories.

Findings

Reentrant states in the second and third Landau levels have drastically different onset temperatures.

Results disagree quantitatively with Hartree-Fock predictions.

Electron bubble configurations may differ from theoretical assumptions.

Abstract

We report drastically different onset temperatures of the reentrant integer quantum Hall states in the second and third Landau level. This finding is in quantitative disagreement with the Hartree-Fock theory of the bubble phases which is thought to describe these reentrant states. Our results indicate that the number of electrons per bubble in either the second or the third Landau level is likely different than predicted.