Publications [#245769] of Albert M. Chang

Papers Published
  1. Cunningham, JE; Timp, G; Chang, AM; Chiu, TH; Jan, W; Schubert, EF; Tsung, WT, Spatial localization of Si in selectively δ-doped AlxGa1-xAs/GaAs heterostructures for high mobility and density realization, Journal of Crystal Growth, vol. 95 no. 1-4 (1989), pp. 253-256 .

    We report on a new type of structure formed by δ-doping the barrier of an AlxGa1-xAs/GaAs heterostructure. We investigate transport in these structures which reveal that very high quality fractional quantum hall structure occurs as well as systematically high density and mobility (2.2×106 cm2/V·s). The dependence of mobility and density on spacer layer thickness is explored. We show that the observed improvements in 2DEG properties are expected from the spatial localization of the Si dopant. © 1989.