Compositional correlation and anticorrelation in quaternary alloys: Competition between bulk thermodynamics and surface kinetics

被引：15
作者：
Albrecht, M.
Abu-Farsakh, H.
Remmele, T.
Geelhaar, L.
Riechert, H.
Neugebauer, J.
机构：
[1] Inst Kristallz, D-12489 Berlin, Germany
[2] Max Planck Inst Eisenforsch GmbH, D-40237 Dusseldorf, Germany
[3] Univ Gesamthsch Paderborn, D-33098 Paderborn, Germany
[4] Qimonda, D-81730 Munich, Germany
来源：
PHYSICAL REVIEW LETTERS | 2007年 / 99卷 / 20期
关键词：
D O I：
10.1103/PhysRevLett.99.206103
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We analyze the atomistic mechanisms driving the compositional correlation of In and N in the quaternary InxGa1-xAs1-yNy alloys combining atomic scale chemical analysis in transmission electron microscopy and density-functional theory calculations. Our results show that for typical growth conditions surface kinetics prevail over bulk thermodynamics resulting in a hitherto unexpected compositional anticorrelation between In and N.
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页数：4
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