Thermal evolution of the morphology of Ni/Ge(111)-c(2 × 8) surface

Agnieszka Tomaszewska, Jhen Hao Li, Xiao Lan Huang, Tsu Yi Fu

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The thermal evolution of the interface formed by room temperature (RT) deposition of Ni atoms (coverage 0.1, 0.5, 1.2 ML) onto a Ge(111)-c(2 × 8) surface has been studied with the use of scanning tunneling microscopy (STM). Atomically resolved STM images revealed that, at RT, the boundaries between the different c(2 × 8) domains acted as nucleation sites for Ni atoms. After annealing the surface with deposited material at 473 to 673 K the formation of nano-sized islands of NixGey compounds was observed. In addition, the occurrence of ring-like structures was recorded. Based on the dual-polarity images the latter were assigned to Ni atoms adsorbed on Ge adatoms.

Original languageEnglish
Pages (from-to)641-647
Number of pages7
JournalMaterials Science- Poland
Volume32
Issue number4
DOIs
Publication statusPublished - 2014 Dec 1

Keywords

  • Ge(111)
  • Ni
  • Nickel germanides
  • Scanning tunneling microscopy

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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