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Enhanced magnetization at integer quantum Hall states

DOI to cite this document:
Meinel, I. ; Grundler, D. ; Heitmann, Detlef ; Manolescu, Andrei ; Gudmundsson, V. ; Wegscheider, Werner ; Bichler, Max
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Date of publication of this fulltext: 30 Nov 2009 13:58


We report on enhancements in the magnetization of two-dimensional electron systems in the quantum Hall regime. The observed discontinuities in the magnetization exceed the predictions for interacting electrons calculated in the Hartree-Fock approximation where only the exchange enhancement of the energy gaps is taken into account. We attribute the further enhancement to many-body correlation ...


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