Phys. Rev. Lett. 96, 066108 (2006) [4 pages]Controlling Planar and Vertical Ordering in Three-Dimensional (In,Ga)As Quantum Dot Lattices by GaAs Surface OrientationReceived 26 August 2005; published 15 February 2006 Anisotropic surface diffusion and strain are used to explain the formation of three-dimensional (In,Ga)As quantum dot lattices. The diffusion characteristics of the surface, coupled with the elastic anisotropy of the matrix, provides an excellent opportunity to influence the dot positions. In particular, quantum dots that are laterally organized into long chains or chessboard two-dimensional arrays vertically organized with strict vertical ordering or vertical ordering that is inclined to the sample surface normal are accurately predicted and observed. © 2006 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.96.066108
DOI:
10.1103/PhysRevLett.96.066108
PACS:
68.65.−k, 61.10.−i, 68.35.Fx, 81.15.Hi
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