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Finite-Element Analysis of Quantum Wire Arrays with and without Strain.

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Abstract

Quantum wire structures, which provide quantum confinement in two dimensions, have undergone extensive study and development for their interesting physical phenomena and potential device applications [l]-[3]. It is widely believed that quantum wires will have superior optical and transport properties compared to quantum wells. Therefore, the fabrication of quantum wires is a very active research area and many different approaches such as growth on vicinal substrates [4], re-growth on V-grooves [5] and cleaved edges [6], partial strain release[7] are actively pursued by different groups. Obviously the main purpose of fabricating quantum wires is to generate semiconductor heterostructures with properties superior to quantum wells. However, a quantitative analysis of under what conditions a quantum wire array is superior to a quantum well is still lacking. The purpose of this paper is to investigate this issue and provide guidelines towards an optimum geometry.

© 1993 Optical Society of America

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