S. A. Köster

Publications (2)0 Total impact

• Source

  Available from: David R Bowler

  Article: Endotaxial Si nanolines in Si(001):H

  F. Bianco, J. H. G. Owen, S. A. Köster, D. Mazur, D. R. Bowler, Ch. Renner
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  ABSTRACT: We present a detailed study of the structural and electronic properties of a self-assembled silicon nanoline embedded in the H-terminated silicon (001) surface, known as the Haiku stripe. The nanoline is a perfectly straight and defect free endotaxial structure of huge aspect ratio; it can grow micrometre long at a constant width of exactly four Si dimers (1.54nm). Another remarkable property is its capacity to be exposed to air without suffering any degradation. The nanoline grows independently of any step edges at tunable densities, from isolated nanolines to a dense array of nanolines. In addition to these unique structural characteristics, scanning tunnelling microscopy and density functional theory reveal a one-dimensional state confined along the Haiku core. This nanoline is a promising candidate for the long sought after electronic solid-state one-dimensional model system to explore the fascinating quantum properties emerging in such reduced dimensionality.
  03/2011;
• Source

  Available from: David R Bowler

  Article: One dimensional Si-in-Si(001) template for single-atom wire growth

  J. H. G. Owen, F. Bianco, S. A. Köster, D. Mazur, D. R. Bowler, Ch. Renner
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  ABSTRACT: Single atom metallic wires of arbitrary length are of immense technological and scientific interest. We describe a novel silicon-only template enabling the self-organised growth of isolated micrometer long surface and subsurface single-atom chains. It consists of a one dimensional, defect-free reconstruction - the Haiku core, here revealed for the first time in details - self-assembled on hydrogenated Si(001) terraces, independent of any step edges. We discuss the potential of this Si-in-Si template as an appealing alternative to vicinal surfaces for nanoscale patterning. Comment: 3 pages, 2 figures
  07/2010;