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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