Imaging of Low Compressibility Strips in the Quantum Hall Liquid

Abstract

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.

5 pages, 3 figures

References in corpus (4)

• Subsurface charge accumulation imaging of a quantum Hall liquid
• Scanned Potential Microscopy of Edge and Bulk Currents in the Quantum Hall Regime
• Electrostatics of Inhomogeneous Quantum Hall Liquid
• Spatial structure of an incompressible Quantum Hall strip

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