Browsing by Subject "2DEG"

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  • Magnetoresistance in a high-mobility two-dimensional electron gas 
    Bockhorn, L.; Barthold, P.; Schuh, D.; Wegscheider, W.; Haug, Rolf J. (College Park, MD : American Physical Society, 2011)
    In a high-mobility two-dimensional electron gas (2DEG) in a GaAs/Al 0.3Ga0.7As quantum well we observe a strong magnetoresistance. In lowering the electron density, the magnetoresistance gets more pronounced and reaches ...
  • Magnetoresistance induced by rare strong scatterers in a high-mobility two-dimensional electron gas 
    Bockhorn, L.; Gornyi, I.V.; Schuh, D.; Reichl, C.; Wegscheider, W.; Haug, Rolf J. (College Park, MD : American Physical Society, 2014)
    We observe a strong negative magnetoresistance at nonquantizing magnetic fields in a high-mobility two-dimensional electron gas. This strong negative magnetoresistance consists of a narrow peak around zero magnetic field ...
  • Nanomachining of mesoscopic electronic devices using an atomic force microscope 
    Schumacher, Hans W.; Keyser, U.F.; Zeitler, U.; Haug, Rolf J.; Eberl, K. (College Park, MD : American Institute of Physics, 1999)
    An atomic force microscope (AFM) is used to locally deplete the two-dimensional electron gas (2DEG) of a GaAs/AlGaAs heterostructure. The depletion is induced by repeated mechanical scribing of the surface layers of the ...