Surface-reconstruction-switched adsorbate photofragmentation dynamics

Energy-resolved angular distributions of neutral fragments ejected during photoinduced electron transfer reaction of CH3Br on GaAs(100) exhibit three distinct methyl-radical ejection channels. These undergo marked changes when the termination is switched from the Ga-rich c(8 x 2) to the As-rich c(2...

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Veröffentlicht in:Physical review letters 2001-07, Vol.87 (5), p.056101-056101, Article 056101
Hauptverfasser: Camillone, 3rd, N, Khan, K A, Yarmoff, J A, Osgood, Jr, R M
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Sprache:eng
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Zusammenfassung:Energy-resolved angular distributions of neutral fragments ejected during photoinduced electron transfer reaction of CH3Br on GaAs(100) exhibit three distinct methyl-radical ejection channels. These undergo marked changes when the termination is switched from the Ga-rich c(8 x 2) to the As-rich c(2 x 8). Our observations are consistent with a strong adsorption-site dependence of the dynamics.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.87.056101