Browsing by Author "Stone, K."

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    Millimeter wave transmission spectroscopy of gated two-dimensional hole systems
    (American Institute of Physics, 2012) Stone, K.; Du, R.R.; Manfra, M.J.; Pfeiffer, L.N.; West, K.W.
    We developed a differential transmission to study cyclotron resonance of GaAs/AlxGa1 xAs two-dimensional hole samples. The technique utilizes a modulated AuPd gate isolated by a Si3N4 dielectric from the sample, which is irradiated opposite the gate by millimeter waves ranging from 2 to 40GHz. This technique effectively removes the background signal and yields a hole effective mass of 0:41me with a cyclotron scattering time of 20 ps, consistent with the previous results using different techniques.