Metamorphosis of self-organized quantum dots into quantum wires

被引:6
|
作者
Liu, FQ [1 ]
Wang, ZG [1 ]
Xu, B [1 ]
Wu, J [1 ]
Qian, JJ [1 ]
机构
[1] Chinese Acad Sci, Inst Semicond, Lab Semicond Mat Sci, Beijing 100083, Peoples R China
关键词
quantum dot; sequential coalescence; quantum wire;
D O I
10.1016/S0375-9601(98)00671-9
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Spontaneous formation of InAs quantum wires in InAlAs on InP(001) via sequential chain-like coalescence of quantum dots along [1 (1) over bar 0] is realized. Theoretical calculations based on the energetics of interacting steps provide a qualitative explanation for the experimental results. Sequential coalescence of initially isolated dots reduces the total free energy strikingly. Thus the wire-like structure is energetically favorable. (C) 1998 Elsevier Science B.V.
引用
收藏
页码:555 / 559
页数:5
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