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

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

2010-07-07

arxiv.org/abs/1007.1051v1

JETP Letters, vol. 92, 69 (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages

Scientific paper

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.

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