Strong, Ultra-narrow Peaks of Longitudinal and Hall Resistances in the Regime of Breakdown of the Quantum Hall Effect

Abstract

With unusually slow and high-resolution sweeps of magnetic field, strong, ultra-narrow (width down to $100\mu \mathrm{T}$) resistance peaks are observed in the regime of breakdown of the quantum Hall effect. The peaks are dependent on the directions and even the history of magnetic field sweeps, indicating the involvement of a very slow physical process. Such a process and the sharp peaks are, however, not predicted by existing theories. We also find a clear connection between the resistance peaks and nuclear spin polarization.

5 pages with 3 figures. To appear in PRL

References in corpus (3)

• A New Type of Electron Nuclear-Spin Interaction from Resistively Detected NMR in the Fractional Quantum Hall Effect Regime
• Dynamic nuclear polarization at the edge of a two-dimensional electron gas
• Duality Relation among Periodic Potential Problems in the Lowest Landau Level

Cited by in corpus (6)

• Electrically-Controlled Nuclear Spin Polarization and Relaxation by Quantum-Hall states
• Electrical polarization of nuclear spins in a breakdown regime of quantum Hall effect
• Landauer-Büttiker approach for hyperfine mediated electronic transport in the integer quantum Hall regime
• Dynamic nuclear polarization induced by breakdown of fractional quantum Hall effect
• Spatial gradient of dynamic nuclear spin polarization induced by breakdown of quantum Hall effect
• High mobility transport in isotopically-enriched ${}^{12}$C and ${}^{13}$C exfoliated graphene