Feil, Thomas and Výborný, K. and Smrčka, L. and Gerl, Christian and Wegscheider, Werner
Vanishing cyclotron gaps in a two-dimensional electron system with a strong short-period modulation.
Physical Review B 75 (7), 075303.
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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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