Publications [#245792] of Albert M. Chang

Papers Published
  1. Chang, AM; Zhang, H; Pfeiffer, LN; West, KW, Fabrication of submicron devices on the (011) cleave surface of a cleaved-edge-overgrowth GaAs/AlGaAs crystal, Applied Physics Letters, vol. 100 no. 12 (2012), pp. 123106 [doi] .

    Abstract:
    We describe the fabrication of submicron devices on the (011) cleave surface of a GaAs heterostructure crystal, in which this surface is extremely narrow. Special purpose devices are produced, which take advantage of the unique characteristics of cleaved-edge-overgrowth. The successful fabrication relies on understanding the surface tension of the electron beam polymethyl methacrylate resist, the workable degree of variation in resist thickness, and on gluing the crystal onto a backing substrate to increase structural strength. We demonstrate functional gate-controlled quantum point contact constrictions placed 9 m from one edge of the cleave surface. © 2012 American Institute of Physics.