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Magnetotransport measurements on freely suspended two-dimensional electron gases

R. H. Blick·F. G. Monzon·W. Wegscheider·M. Bichler·F. Stern·M. L. Roukes
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Abstract

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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R. H. Blick, F. G. Monzon, W. Wegscheider, M. Bichler, F. Stern, M. L. Roukes. 2000-08-22. Magnetotransport measurements on freely suspended two-dimensional electron gases. https://doi.org/10.1103/physrevb.62.17103

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