Anisotropic In distribution in InGaN core-shell nanowires

被引：8
|
作者：
Leclere, C. [1 ]
Katcho, N. A. [2 ]
Tourbot, G. [3 ,4 ]
Daudin, B. [3 ,4 ]
Proietti, M. G. [5 ]
Renevier, H. [1 ]
机构：
[1] Grenoble INP Minatec, Mat & Genie Phys Lab, Grenoble, France
[2] CEA Grenoble, Liten, F-38054 Grenoble, France
[3] Univ Grenoble 1, CEA CNRS Grp Nanophys & Semicond, F-38054 Grenoble, France
[4] CEA Grenoble, INAC, SP2M, F-38054 Grenoble, France
[5] CSIC Univ Zaragoza, Inst Ciencia Mat Aragon, Dept Fis Mat Condensada, Zaragoza, Spain
来源：
JOURNAL OF APPLIED PHYSICS | 2014年 / 116卷 / 01期
关键词：
FINE-STRUCTURE; ABSORPTION; LOCALIZATION; IFEFFIT; ORIGIN;
D O I：
10.1063/1.4886756
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In this work, we investigate the local atomic structure of defect-free homogeneous and self-organized core-shell structure nanowires by means of X-ray Absorption Fine Structure (XAFS) Spectroscopy at the In LIII and K edges and Multiwavelength Anomalous Diffraction. The results are interpreted by comparison of the experimental data with X-ray absorption calculations carried out with ab initio structural models. Extended-XAFS data analysis at In K-edge shows an anisotropic In distribution in the second nearest neighbors pointing out to a deviation from randomness in In distribution for the core-shell sample. (C) 2014 AIP Publishing LLC.
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页数：7
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