Physics of Fluids - Publications

Germanene termination of Ge2Pt crystals on Ge(110)

arΧiv
Journal of Physics: Condensed Matter 26, 442001 (2014)

Authors

	Pantelis Bampoulis
	Lijie Zhang
	A. Safaei
	R. van Gastel
	Bene Poelsema
	Harold J. W. Zandvliet

BibTeΧ

@article{0953-8984-26-44-442001,
  author={P Bampoulis and L Zhang and A Safaei and R van Gastel and B Poelsema and H J W Zandvliet},
  title={Germanene termination of Ge 2 Pt crystals on Ge(110)},
  journal={Journal of Physics: Condensed Matter},
  volume={26},
  number={44},
  pages={442001},
  url={http://stacks.iop.org/0953-8984/26/i=44/a=442001},
  year={2014},
  abstract={We have investigated the growth of Pt on Ge(1 1 0) using scanning tunneling microscopy and spectroscopy. The deposition of several monolayers of Pt on Ge(1 1 0) followed by annealing at 1100 K results in the formation of 3D metallic Pt-Ge nanocrystals. The outermost layer of these crystals exhibits a honeycomb structure. The honeycomb structure is composed of two hexagonal sub-lattices that are displaced vertically by 0.2 Å with respect to each other. The nearest-neighbor distance of the atoms in the honeycomb lattice is 2.5  ±  0.1 Å, i.e. very close to the predicted nearest-neighbor distance in germanene (2.4 Å). Scanning tunneling spectroscopy reveals that the atomic layer underneath the honeycomb layer is more metallic than the honeycomb layer itself. These observations are in line with a model recently proposed for metal di-(silicides/)germanides: a hexagonal crystal with metal layers separated by semiconductor layers with a honeycomb lattice. Based on our observations we propose that the outermost layer of the Ge 2 Pt nanocrystal is a germanene layer.}
}