How to probe a fractionally charged quasihole?

DOI to cite this document:: 10.5283/epub.11824

Schüller, Christian ; Brooks, K.-B. ; Schröter, Patrick ; Heyn, Christian ; Heitmann, Detlef ; Bichler, Max ; Wegscheider, Werner ; Chakraborty, Tapash ; Apalkov, Vladimir M.

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Date of publication of this fulltext: 11 Jan 2010 13:21

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Abstract

We report an anomalous dispersion of charged excitons in photoluminescence experiments on a two-dimensional electron gas subjected to a quantizing magnetic field around v=1/3. We have found that the anomaly exists only at a very low temperature (0.1 K) and an intermediate electron density (0.9×1011 cm−2). It is explained to occur due to the perturbation of the incompressible liquid at v=1/3. The ...