hide
Free keywords:
atomic force microscope; double quantum dots; transport measurements
Abstract:
We demonstrate the stepwise fabrication of parallel double
quantum dots in GaAs/AlGaAs-heterostructures. The atomic force
microscope serves as a direct lithographic tool for the
processing of our samples, The devices are characterized by
transport measurements. Coulomb-blockade oscillations and
diamonds with different periods for the two quantum dots are
observed. (C) 2002 Elsevier Science B.V, All rights reserved.