Imaging of Low Compressibility Strips in the Quantum Hall Liquid

Details Imaging of Low Compressibility Strips in the Quantum Hall Liquid Imaging of Low Compressibility Strips in the Quantum Hall Liquid

1999-10-05

arxiv.org/abs/cond-mat/9910061v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 3 figures

Scientific paper

10.1103/PhysRevB.61.R16323

Using Subsurface Charge Accumulation scanning microscopy we image strips of low compressibility corresponding to several integer Quantum Hall filling factors. We study in detail the strips at Landau level filling factors $\nu =$ 2 and 4. The observed strips appear significantly wider than predicted by theory. We present a model accounting for the discrepancy by considering a disorder-induced nonzero density of states in the cyclotron gap.

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