Document Type

Article

Publication Date

12-1-2004

Publication Title

Applied Physics Letters

Abstract

To realize the desired zero-dimensional behavior of a quantum dot ensemble, the ability to fabricate quantum dots with a high packing density and a high degree of size, shape, and spacing uniformity is crucial. Here we report highly ordered InAs nanodot arrays grown by molecular-beam epitaxy on nonlithographically nanopatterned GaAs. Approximately 20 billion dots are grown in a 1 cm2 area with the smallest size dispersion ever reported and forming a lateral superlattice in hexagonal dense packing form. These techniques presage a pathway to controlled growth of periodic quantum dot superstructures, which offer macroscopic spatial coherence in the interaction of quantum dots with radiation.

Volume

85

Issue

24

First Page Number

5974

Last Page Number

5976

DOI

10.1063/1.1834987

Publisher Statement

© 2004, The American Institute of Physics. Available on publisher's site at http://apl.aip.org/.

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