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Title: Effects of laser irradiation on the self-assembly of MnAs nanoparticles in a GaAs matrix

Abstract

We investigate the effects of laser irradiation on the self-assembly of MnAs nanoparticles during solid-phase decomposition in a GaAs matrix. It is found that laser irradiation suppresses the growth of MnAs nanoparticles from small to large size, and that the median diameter D{sub 1} in the size distribution of small MnAs nanoparticles depends on the incident photon energy E following D{sub 1} {approx} E{sup -1/5}. We explain this behavior by the desorption of Mn atoms on the MnAs nanoparticle surface due to resonant optical absorption, in which incident photons excite intersubband electronic transitions between the quantized energy levels in the MnAs nanoparticles.

Authors:
;  [1]; ; ;  [1];  [2]
  1. Department of Electrical Engineering and Information Systems, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656 (Japan)
  2. (Japan)
Publication Date:
OSTI Identifier:
22089508
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 101; Journal Issue: 19; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; ABSORPTION; ATOMS; DECOMPOSITION; DESORPTION; DISTRIBUTION; FERROMAGNETIC MATERIALS; GALLIUM ARSENIDES; LASER RADIATION; MANGANESE ARSENIDES; MATRIX MATERIALS; NANOSTRUCTURES; PHOTONS; PHYSICAL RADIATION EFFECTS; SURFACES

Citation Formats

Hai, Pham Nam, Nomura, Wataru, Yatsui, Takashi, Ohtsu, Motoichi, Tanaka, Masaaki, and Nanophotonics Research Center, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656. Effects of laser irradiation on the self-assembly of MnAs nanoparticles in a GaAs matrix. United States: N. p., 2012. Web. doi:10.1063/1.4765355.
Hai, Pham Nam, Nomura, Wataru, Yatsui, Takashi, Ohtsu, Motoichi, Tanaka, Masaaki, & Nanophotonics Research Center, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656. Effects of laser irradiation on the self-assembly of MnAs nanoparticles in a GaAs matrix. United States. doi:10.1063/1.4765355.
Hai, Pham Nam, Nomura, Wataru, Yatsui, Takashi, Ohtsu, Motoichi, Tanaka, Masaaki, and Nanophotonics Research Center, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656. Mon . "Effects of laser irradiation on the self-assembly of MnAs nanoparticles in a GaAs matrix". United States. doi:10.1063/1.4765355.
@article{osti_22089508,
title = {Effects of laser irradiation on the self-assembly of MnAs nanoparticles in a GaAs matrix},
author = {Hai, Pham Nam and Nomura, Wataru and Yatsui, Takashi and Ohtsu, Motoichi and Tanaka, Masaaki and Nanophotonics Research Center, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656},
abstractNote = {We investigate the effects of laser irradiation on the self-assembly of MnAs nanoparticles during solid-phase decomposition in a GaAs matrix. It is found that laser irradiation suppresses the growth of MnAs nanoparticles from small to large size, and that the median diameter D{sub 1} in the size distribution of small MnAs nanoparticles depends on the incident photon energy E following D{sub 1} {approx} E{sup -1/5}. We explain this behavior by the desorption of Mn atoms on the MnAs nanoparticle surface due to resonant optical absorption, in which incident photons excite intersubband electronic transitions between the quantized energy levels in the MnAs nanoparticles.},
doi = {10.1063/1.4765355},
journal = {Applied Physics Letters},
issn = {0003-6951},
number = 19,
volume = 101,
place = {United States},
year = {2012},
month = {11}
}