Thermodynamic and kinetic mechanisms in self-assembled quantum dot formation

被引：23
作者：
Barabási, AL [1 ]
机构：
[1] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA
来源：
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | 1999年 / 67卷 / 1-2期
关键词：
thermodynamic mechanisms; kinetic mechanisms; self-assembled quantum dot;
D O I：
10.1016/S0921-5107(99)00205-6
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Heteroepitaxial growth of highly strained structures offers the possibility to fabricate islands with very narrow size distribution, coined self-assembling quantum dots (SAQD). In spite of the high experimental interest, the mechanism of SAQD formation is not well understood. We will show that equilibrium theories can successfully predict the island sizes and densities, the nature and the magnitude of the critical thickness needed to be deposited for SAQD formation, as well as the onset of ripening. Furthermore, the flux and temperature dependence of the SAQDs is described using kinetic Monte Carlo simulations. (C) 1999 Elsevier Science S.A. All rights reserved.
引用
收藏
页码：23 / 30
页数：8
相关论文
共 32 条
[1]   Growth and characterization of self-assembled Ge-rich islands on Si [J].
Abstreiter, G ;
Schittenhelm, P ;
Engel, C ;
Silveira, E ;
Zrenner, A ;
Meertens, D ;
Jager, W .
SEMICONDUCTOR SCIENCE AND TECHNOLOGY, 1996, 11 (11) :1521-1528
[2]  
[Anonymous], SITZUNGSBER AK 2B MN
[3]  
Barabasi A-Ls, 1995, FRACTAL CONCEPTS SUR, DOI [10.1017/CBO9780511599798, DOI 10.1017/CBO9780511599798]
[4]  
Barabasi AL, 1997, APPL PHYS LETT, V70, P2565, DOI 10.1063/1.118920
[5]   Equilibrium phase diagrams for dislocation free self-assembled quantum dots [J].
Daruka, I ;
Barabasi, AL .
APPLIED PHYSICS LETTERS, 1998, 72 (17) :2102-2104
[6]   Shape transition in growth of strained islands [J].
Daruka, I ;
Tersoff, J ;
Barabási, AL .
PHYSICAL REVIEW LETTERS, 1999, 82 (13) :2753-2756
[7]   Dislocation-free island formation in heteroepitaxial growth: A study at equilibrium [J].
Daruka, I ;
Barabasi, AL .
PHYSICAL REVIEW LETTERS, 1997, 79 (19) :3708-3711
[8]   COHERENT ISLANDS AND MICROSTRUCTURAL EVOLUTION [J].
DRUCKER, J .
PHYSICAL REVIEW B, 1993, 48 (24) :18203-18206
[9]  
GERARD JM, 1995, CONFINED ELECT PHOTO
[10]   Morphological evolution of strained films by cooperative nucleation [J].
Jesson, DE ;
Chen, KM ;
Pennycook, SJ ;
Thundat, T ;
Warmack, RJ .
PHYSICAL REVIEW LETTERS, 1996, 77 (07) :1330-1333
1234