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

研究成果: ジャーナルへの寄稿学術誌査読

3 被引用数 (Scopus)

抄録

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.

本文言語英語
論文番号193102
ジャーナルApplied Physics Letters
101
19
DOI
出版ステータス出版済み - 11月 5 2012
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 物理学および天文学(その他)

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