Self-organized, one-dimensional Pt nanowires on Ge(001)


Gurlu O. , ADAM O., ZANDVLIET H., POELSEMA B.

APPLIED PHYSICS LETTERS, vol.83, no.22, pp.4610-4612, 2003 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 83 Issue: 22
  • Publication Date: 2003
  • Doi Number: 10.1063/1.1630383
  • Title of Journal : APPLIED PHYSICS LETTERS
  • Page Numbers: pp.4610-4612

Abstract

Pt atoms adsorbed onto Ge(001) surface form extremely well-ordered nanowire arrays by self-organization after high-temperature annealing. Using scanning tunneling spectroscopy/microscopy, it is shown that they are metallic and defect free. They are only 0.4 nm thick with a spacing of 1.6 nm in between, and have aspect ratios up to 1000. Their formation can be discussed in terms of a relativistic property possessed by heaviest 5d elements, and the pathway to their formation can be explained by dimer breakup on Ge(001) surface at elevated temperatures followed by a surface polymerization reaction. (C) 2003 American Institute of Physics.