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Title: Identifying the dominant interstitial complex in dilute GaAsN alloys

Significant composition-dependent incorporation of N into non-substitutional sites is often reported for dilute GaAsN alloys. To distinguish (N-N){sub As}, (N-As){sub As}, and (As{sub Ga}-N{sub As}) complexes, we compare Rutherford backscattering spectrometry and nuclear reaction analysis (NRA) spectra with Monte Carlo-Molecular Dynamics simulations along the [100], [110], and [111] directions. For the Monte Carlo simulation, we assume that (N-N){sub As} is aligned along the [111] direction, while (N-As){sub As} is aligned along the [010] direction. The measured channeling NRA spectra exhibit the highest (lowest) yield in the [111] ([100]) directions. Similar trends are observed for simulations of (N-As){sub As}, suggesting that (N-As){sub As} is the dominant interstitial complex in dilute GaAsN.
Authors:
;  [1] ;  [2] ;  [1] ;  [3]
  1. Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109-2136 (United States)
  2. Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
  3. (United States)
Publication Date:
OSTI Identifier:
22486149
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 107; Journal Issue: 22; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ALLOYS; CHANNELING; COMPARATIVE EVALUATIONS; COMPUTERIZED SIMULATION; MOLECULAR DYNAMICS METHOD; MONTE CARLO METHOD; NUCLEAR REACTION ANALYSIS; RUTHERFORD BACKSCATTERING SPECTROSCOPY; SPECTRA; YIELDS