Haldane Sashes in Quantum Hall Spectra

Abstract

We show that the low-temperature sash features in the lowest Landau-level (LLL) tunneling density-of-states (TDOS) recently discovered by Dial and Ashoori are intimately related to the discrete Haldane-pseudopotential interaction energy scales that govern fractional quantum Hall physics. Our analysis is based on expressions for the tunneling density-of-states which become exact at filling factors close to $\nu =0$ and $\nu =1$, where the sash structure is most prominent. We comment on other aspects of LLL correlation physics that can be revealed by accurate temperature-dependent tunneling data.

Added reference

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• Tunneling Spectroscopy of Disordered Two-Dimensional Electron Gas in the Quantum Hall Regime