Published December 15, 2000
| Published
Journal Article
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Magnetotransport measurements on freely suspended two-dimensional electron gases
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Abstract
We present magnetotransport measurements on freely suspended two-dimensional electron gases from AlxGa1-xAs/GaAs heterostructures. The technique to realize such devices relies on a specially molecular beam epitaxy grown GaAs/AlxGa1-xAs-heterostructure, including a sacrificial layer. We fabricated simple mini-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.
Additional Information
© 2000 The American Physical Society. Received 10 April 2000; revised 25 July 2000. We gratefully acknowledge funding for this work from DARPA MTO/MEMS under Grant No. DABT-63-98-1-0012. We thank A.N. Cleland for expert technical help and S. Ulloa for critically reading the manuscript. R.H.B. thanks the Max-Planck-Gesellschaft (Otto-Hahn stipend), the Max-Planck-Institute for Solid State Physics, Stuttgart, and the Alexander-von-Humboldt Stiftung (Feodor-Lynen stipend) for support.Attached Files
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Additional details
- Eprint ID
- 5215
- Resolver ID
- CaltechAUTHORS:BLIprb00
- Defense Advanced Research Projects Agency (DARPA)
- DABT-63-98-1-0012
- Max-Planck-Gesellschaft
- Max Planck Institute for Solid State Physics
- Alexander von Humboldt Stiftung
- Created
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2006-10-05Created from EPrint's datestamp field
- Updated
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2021-11-08Created from EPrint's last_modified field