Research of Equilibrium Composition Map in Conic Quantum Dots

doi:10.1088/0256-307X/27/5/056803

Chin. Phys. Lett.

2010, Vol. 27

Issue (5): 056803 DOI: 10.1088/0256-307X/27/5/056803

CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES

Research of Equilibrium Composition Map in Conic Quantum Dots

ZHAO Wei, YU Zhong-Yuan, LIU Yu-Min, FENG Hao, XU Zi-Huan

¹Key Laboratory of Information Photonics and Optical Communications (Ministry of Education), Beijing University of Posts and Telecommunications, Beijing 100876

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ZHAO Wei, YU Zhong-Yuan, LIU Yu-Min et al 2010 Chin. Phys. Lett. 27 056803

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Abstract We present equilibrium composition maps in InGaAs/GaAs conic strained quantum dots, using the finite element method and quadratic programming optimization method. The axis-symmetric model is adopted. We compare the steep islands with the shallow islands and determine the influence of entropic energy. The difference of equilibrium composition maps between the single dot and the quantum dot stacks is also discussed.

Keywords: 68.35.Dv 81.07.Ta 73.21.La

Received: 17 November 2009 Published: 23 April 2010

PACS:	68.35.Dv	(Composition, segregation; defects and impurities)
	81.07.Ta	(Quantum dots)
	73.21.La	(Quantum dots)

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https://cpl.iphy.ac.cn/10.1088/0256-307X/27/5/056803 OR https://cpl.iphy.ac.cn/Y2010/V27/I5/056803

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	ZHAO Wei
	YU Zhong-Yuan
	LIU Yu-Min
	FENG Hao
	XU Zi-Huan

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