Abstract
We apply polarization resolved photoluminescence spectroscopy to measure the spin polarization of a two dimensional electron gas in perpendicular magnetic field. We find that the splitting between the and polarizations exhibits a sharp drop at and is equal to the bare Zeeman energy, which resembles the behavior at even filling factors. We show that this behavior is consistent with filling factor being unpolarized.
- Received 17 May 2010
DOI:https://doi.org/10.1103/PhysRevLett.105.096801
© 2010 The American Physical Society
Viewpoint
The enigma in a spin?
Published 23 August 2010
Theorists and experimentalists have long been trying to explain the existence of a fractional quantum Hall effect where it is not expected.
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