Magnetotransport measurements on freely suspended two-dimensional electron gases

Details Magnetotransport measurements on freely suspended two-dimensional electron gases Magnetotransport measurements on freely suspended two-dimensional electron gases

2000-08-22

arxiv.org/abs/cond-mat/0008326v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

7 pages, 10 figures, submitted to PRB

Scientific paper

10.1103/PhysRevB.62.17103

We present magnetotransport measurements on freely suspended two-dimensional electron gases from AlGaAs/GaAs heterostructures. The technique to realize such devices relies on a specially MBE grown GaAs/AlGaAs-heterostructure including a sacrificial layer. We fabricated simple Hall-bars as well as quantum cavities and quantum dot systems. We find well-pronounced Shubnikov-de Haas oscillations and observe commensurability resonances, allowing characterization of the electron gas in these 100 nm thin membranes.

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