17 citations · 56 across the 4 of their papers we have counts for
5 papers
Field-effect-induced two-dimensional electron gas utilizing modulation doping for improved ohmic contacts
Sumit Mondal, Geoffrey C. Gardner, John D. Watson +3
Modulation-doped AlGaAs/GaAs heterostructures are utilized extensively in the study of quantum transport in nanostructures, but charge fluctuations associated with remote ionized d…
The Fractional Quantum Hall State in the Presence of Alloy Disorder
Nianpei Deng, G. C. Gardner, S. Mondal +3
We report quantitative measurements of the impact of alloy disorder on the fractional quantum Hall state. Alloy disorder is controlled by the aluminum content in the Al…
Growth and electrical characterization of Al0.24Ga0.76As/AlxGa1-xAs/Al0.24Ga0.76As modulation-doped quantum wells with extremely low x
Geoffrey C. Gardner, John D. Watson, Sumit Mondal +3
We report on the growth and electrical characterization of modulation-doped Al0.24Ga0.76As/AlxGa1-xAs/Al0.24Ga0.76As quantum wells with mole fractions as low as x=0.00057. Such str…
Exploration of the Limits to Mobility in Two-Dimensional Hole Systems in GaAs/AlGaAs Quantum Wells
J. D. Watson, S. Mondal, G. Gardner +2
We report on the growth and electrical characterization of a series of two-dimensional hole systems (2DHSs) used to study the density dependence of low temperature mobility in 20 n…
Scattering Mechanisms in a High Mobility Low Density Carbon-Doped (100) GaAs Two-Dimensional Hole System
J. D. Watson, S. Mondal, G. A. Csáthy +5
We report on a systematic study of the density dependence of mobility in a low-density Carbon-doped (100) GaAs two-dimensional hole system (2DHS). At T= 50 mK, a mobility of 2.6 x…