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Optical Probing of a Fractionally Charged Quasihole in an Incompressible Liquid

Schüller, Christian ; Broocks, Kay-Birger ; Schröter, Patrick ; Heyn, Christian ; Heitmann, Detlef ; Bichler, Max ; Wegscheider, Werner ; Chakraborty, Tapash ; Apalkov, V. M.
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Date of publication of this fulltext: 08 Feb 2010 13:31


Abstract

In photoluminescence spectroscopy of a low-mobility two-dimensional electron gas subjected to a quantizing magnetic field, we observe an anomaly around nu= (1/3) at a very low temperature (0.1 K) and an intermediate electron density (0.9×1011 cm–2). The anomaly is explained as due to perturbation of the incompressible liquid at the Laughlin state due to close proximity of a localized charged ...

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