Quantum dot formation on a strain-patterned epitaxial thin film

S. M. Wise; J. S. Lowengrub; J. S. Kim; K. Thornton; P. W. Voorhees; W. C. Johnson

doi:10.1063/1.2061852

Quantum dot formation on a strain-patterned epitaxial thin film

S. M. Wise^*, J. S. Lowengrub, J. S. Kim, K. Thornton, P. W. Voorhees, W. C. Johnson

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

80 Scopus citations

Abstract

We model the effect of substrate strain patterning on the self-assembly of quantum dots (QDs). When the surface energy is isotropic, we demonstrate that strain patterning via embedded substrate inclusions may result in ordered, self-organized QD arrays. However, for systems with strong cubic surface energy anisotropy, the same patterning does not readily lead to an ordered array of pyramids at long times. We conclude that the form of the surface energy anisotropy strongly influences the manner in which QDs self-assemble into regular arrays.

Original language	English (US)
Article number	133102
Pages (from-to)	1-3
Number of pages	3
Journal	Applied Physics Letters
Volume	87
Issue number	13
DOIs	https://doi.org/10.1063/1.2061852
State	Published - Sep 26 2005

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "Quantum dot formation on a strain-patterned epitaxial thin film",

abstract = "We model the effect of substrate strain patterning on the self-assembly of quantum dots (QDs). When the surface energy is isotropic, we demonstrate that strain patterning via embedded substrate inclusions may result in ordered, self-organized QD arrays. However, for systems with strong cubic surface energy anisotropy, the same patterning does not readily lead to an ordered array of pyramids at long times. We conclude that the form of the surface energy anisotropy strongly influences the manner in which QDs self-assemble into regular arrays.",

author = "Wise, {S. M.} and Lowengrub, {J. S.} and Kim, {J. S.} and K. Thornton and Voorhees, {P. W.} and Johnson, {W. C.}",

note = "Funding Information: We gratefully acknowledge the support of the National Science Foundation through the Center for the Design of Nanoscopic Materials, Grant DMR0080016, and the Divisions of Materials Research and Mathematical Sciences.",

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T1 - Quantum dot formation on a strain-patterned epitaxial thin film

AU - Wise, S. M.

AU - Lowengrub, J. S.

AU - Kim, J. S.

AU - Thornton, K.

AU - Voorhees, P. W.

AU - Johnson, W. C.

N1 - Funding Information: We gratefully acknowledge the support of the National Science Foundation through the Center for the Design of Nanoscopic Materials, Grant DMR0080016, and the Divisions of Materials Research and Mathematical Sciences.

PY - 2005/9/26

Y1 - 2005/9/26

N2 - We model the effect of substrate strain patterning on the self-assembly of quantum dots (QDs). When the surface energy is isotropic, we demonstrate that strain patterning via embedded substrate inclusions may result in ordered, self-organized QD arrays. However, for systems with strong cubic surface energy anisotropy, the same patterning does not readily lead to an ordered array of pyramids at long times. We conclude that the form of the surface energy anisotropy strongly influences the manner in which QDs self-assemble into regular arrays.

AB - We model the effect of substrate strain patterning on the self-assembly of quantum dots (QDs). When the surface energy is isotropic, we demonstrate that strain patterning via embedded substrate inclusions may result in ordered, self-organized QD arrays. However, for systems with strong cubic surface energy anisotropy, the same patterning does not readily lead to an ordered array of pyramids at long times. We conclude that the form of the surface energy anisotropy strongly influences the manner in which QDs self-assemble into regular arrays.

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Quantum dot formation on a strain-patterned epitaxial thin film

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