Charge and Spin Reconstruction in Quantum Hall Strips

Abstract

We study the effect of electron-electron interactions on the charge and spin structures of a Quantum Hall strip in a triangularly confined potential. We find that the strip undergoes a spin-unpolarized to spin-polarized transition as a function of magnetic field perpendicular to the strip. For sharp confinements the spin-polarization transition is spontaneous and first develops at the softer side of the triangular potential which shows up as an "eye-structure" in the electron dispersion. For sufficiently weak confinements this spin-polarization transition is preceded by a charge reconstruction of a single spin species, which creates a spin-polarized strip of electrons with a width of the order of the magnetic length detached from the rest of the system. Relevance of our findings to the recent momentum resolved tunneling experiments is also discussed.

4+ pages

References in corpus (7)

• Spin-charge separation and localization in one-dimension
• Edge reconstruction in the fractional quantum Hall regime
• Field Theoretical Description of Quantum Hall Edge Reconstruction
• Edge reconstructions in fractional quantum Hall systems
• Hysteresis and spin phase transitions in quantum wires in the integer quantum Hall regime
• Electron Spectral Functions of Reconstructed Quantum Hall Edges
• Effects of Quantum Hall Edge Reconstruction on Momenum-Resolved Tunneling

Cited by in corpus (6)

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• Spin Mode-Switching at the Edge of a Quantum Hall System
• Manipulating topological-insulator properties using quantum confinement
• Relaxation and edge reconstruction in integer quantum Hall systems
• Edge spin excitations and reconstructions of integer quantum Hall liquids