Equilibrium and metastable states of nanoislands in multilayered Stranski-Krastanow systems

C.-H. Chiu and Hangyao Wang
Phys. Rev. B 75, 125416 – Published 14 March 2007

Abstract

In this paper, we analyze the total-energy change during the formation of a nanoisland on multilayered Stranski-Krastanow (SK) systems containing an embedded nanostructure. The energy analyses show that when the film thickness is in the vicinity of the critical value for the SK transition, the embedded nanostructure can induce an equilibrium or metastable state in which the top nanoisland is stable against size variations. The two states are a general feature of the SK systems that can be utilized to fabricate uniform stable arrays of nanoislands.

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  • Received 16 October 2006

DOI:https://doi.org/10.1103/PhysRevB.75.125416

©2007 American Physical Society

Authors & Affiliations

C.-H. Chiu* and Hangyao Wang

  • Department of Materials Science and Engineering, National University of Singapore, Singapore 117576, Singapore

  • *Electronic address: msecch@nus.edu.sg
  • Present address: University of Notre Dame.

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Issue

Vol. 75, Iss. 12 — 15 March 2007

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