R.D. Murphy, R.O. Watts
Journal of Low Temperature Physics
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.
R.D. Murphy, R.O. Watts
Journal of Low Temperature Physics
J.H. Stathis, R. Bolam, et al.
INFOS 2005
Lawrence Suchow, Norman R. Stemple
JES
H.D. Dulman, R.H. Pantell, et al.
Physical Review B