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

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

doi:10.2478/s13536-014-0239-4

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

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

Department of Physics

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

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 Ni_xGe_y 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 language	English
Pages (from-to)	641-647
Number of pages	7
Journal	Materials Science- Poland
Volume	32
Issue number	4
DOIs	https://doi.org/10.2478/s13536-014-0239-4
Publication status	Published - 2014 Dec 1

Keywords

Ge(111)
Ni
Nickel germanides
Scanning tunneling microscopy

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.2478/s13536-014-0239-4

Cite this

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

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.",

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AU - Tomaszewska, Agnieszka

AU - Li, Jhen Hao

AU - Huang, Xiao Lan

AU - Fu, Tsu Yi

N1 - Publisher Copyright: © Wroclaw University of Technology.

PY - 2014/12/1

Y1 - 2014/12/1

N2 - 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.

AB - 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.

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KW - Scanning tunneling microscopy

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

Abstract

Keywords

ASJC Scopus subject areas

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