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Initial adsorption of Cr atoms on GaAs(0 0 1)

✍ Scribed by Kazuma Yagyu; Daisuke Komamiya; Junji Yoshino

Publisher: Elsevier Science
Year: 2011
Tongue: English
Weight: 400 KB
Volume: 43
Category: Article
ISSN: 1386-9477
DOI: 10.1016/j.physe.2010.07.048

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✦ Synopsis

Cr-adsorbed GaAsð0 0 1Þ-cð4 Â 4Þa surfaces were investigated in view of a preparatory stage before studying the growth of zincblende CrAs. Cr was adsorbed on a GaAsð001Þ-cð4 Â 4Þa surface at 200 1C followed by annealing for 2 min. Cr adsorbed surface was investigated with scanning tunneling microscopy at 80 K. Single Cr atom was identified after the classification of Cr dots grown on the surface. The results have suggested that a Cr atom adsorbs on a site between three Ga-As dimers. After further adsorption of Cr, the surface is covered by dots which are higher than a step height of the substrate.

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Initial adsorption of Cr atoms on GaAs(0&#xa0;0&#xa0;1)

✦ Synopsis

Initial adsorption of Cr atoms on GaAs(0 0 1)