Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1547549 | Physica E: Low-dimensional Systems and Nanostructures | 2006 | 4 Pages |
Abstract
We have measured the energy-level structure of high mobility, strongly coupled bilayer two-dimensional electron systems in tilted magnetic fields by means of magnetotransport experiments. At tilt angles where single-particle levels with opposite spin and symmetry cross, we observe a surprising sudden broadening of the quantum Hall plateaus and a deepening of the Shubnikov-de Haas minima. This observation is explained by an interaction-induced rearrangement of the energy level structure which strongly increases the energetic splitting of two (anti-)crossing levels.
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Materials Science
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Authors
J.W.W. van Tilburg, U. Zeitler, J.C. Maan, D. Reuter, A.D. Wieck, G. Biasiol, L. Sorba,