Anisotropic In distribution in InGaN core-shell nanowires

Journal Article · Mon Jul 07 00:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4886756· OSTI ID:22306168

Leclere, C.; Katcho, N. A. ^[1]; Tourbot, G.; Daudin, B. ^[2]; Proietti, M. G. ^[3]

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1. Liten, CEA-Grenoble, 17 rue des martyrs, 38054 Grenoble (France)
2. CEA-CNRS group Nanophysique et Semiconducteurs, Université Joseph Fourier and CEA Grenoble, INAC, SP2M, 17 rue des Martyrs, 38054 Grenoble (France)
3. Departamento de Fisica de la Materia Condensada, Instituto de Ciencia de Materiales de Aragon, CSIC - Universidad de Zaragoza, Zaragoza (Spain)

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 L{sub III} 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.

• OSTI ID: 22306168
• Journal Information: Journal of Applied Physics, Vol. 116, Issue 1; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
77 NANOSCIENCE AND NANOTECHNOLOGY
ABSORPTION
ABSORPTION SPECTROSCOPY
ANISOTROPY
DATA ANALYSIS
DEFECTS
DIFFRACTION
DISTRIBUTION
FINE STRUCTURE
GALLIUM COMPOUNDS
INDIUM COMPOUNDS
NANOWIRES
NITROGEN COMPOUNDS
QUANTUM WIRES
RANDOMNESS
STRUCTURAL MODELS
X RADIATION
X-RAY SPECTROSCOPY