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Vanishing cyclotron gaps in a two-dimensional electron system with a strong short-period modulation

DOI to cite this document:
Feil, Thomas ; Výborný, K. ; Smrčka, L. ; Gerl, Christian ; Wegscheider, Werner
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Date of publication of this fulltext: 25 Jan 2010 13:39


Magnetotransport in a density-tunable two-dimensional electron gas that is modulated with a strong, atomically precise superlattice potential of a 15 nm period is investigated. For low densities, the system shows typical two-dimensional behavior. In the regime of large densities, however, a quasi-one-dimensional state is entered, in which the cyclotron gaps vanish and the quantum Hall effect ...


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