Local investigation of the energy gap within the incompressible strip in the quantum Hall regime

Abstract

We experimentally study the energy gap within the incompressible strip at local filling factor ${\nu }_c=1$ at the quantum Hall edge for samples of very different mobilities. The obtained results indicate strong enhancement of the energy gap in comparison to the single-particle Zeeman splitting. We identify the measured gap as a mobility gap, so a pronounced experimental in-plane magnetic field dependence can both be attributed to the spin effects as well as to the change in the energy levels broadening.

4 pages

References in corpus (1)

• Spin gap in the 2D electron system of GaAs/AlGaAs single heterojunctions in weak magnetic fields

Cited by in corpus (3)

• A quantum Hall Mach-Zehnder interferometer far beyond the equilibrium
• Energy spectrum reconstruction at the edge of a two-dimensional electron system with strong spin-orbit coupling
• The visibility of IQHE at sharp edges: Experimental proposals based on interactions and edge electrostatics