期刊
APPLIED PHYSICS LETTERS
卷 80, 期 12, 页码 2105-2107出版社
AMER INST PHYSICS
DOI: 10.1063/1.1463698
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Separately contacted layers of a two-dimensional (2D) electron gas and a 2D hole gas have been prepared in GaAs, which are separated by AlGaAs barriers down to 15 nm thickness. The molecular-beam-epitaxial growth was interrupted just before growth of the double-layer structure in order to use in situ focused-ion-beam implantation to pattern contacts which extend underneath the barrier. The two charge gases form upon biasing the p- and n-type contacts underneath and above the barrier in the forward direction and show independent transistor-like behavior. (C) 2002 American Institute of Physics.
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