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

Pham Nam Hai; Wataru Nomura; Takashi Yatsui; Motoichi Ohtsu; Masaaki Tanaka

doi:10.1063/1.4765355

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

Pham Nam Hai, Wataru Nomura, Takashi Yatsui, Motoichi Ohtsu, Masaaki Tanaka

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

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 ₁ in the size distribution of small MnAs nanoparticles depends on the incident photon energy E following D ₁ ∼ E ^-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.

Original language	English
Article number	193102
Journal	Applied Physics Letters
Volume	101
Issue number	19
DOIs	https://doi.org/10.1063/1.4765355
Publication status	Published - Nov 5 2012

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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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 1 in the size distribution of small MnAs nanoparticles depends on the incident photon energy E following D 1 ∼ E -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.",

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AU - Tanaka, Masaaki

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