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Title: One-dimensional silicon nanolines in the Si(001):H surface

We present a detailed study of the structural and electronic properties of a self-assembled silicon nanoline embedded in the monohydride Si(001):H surface, known as the Haiku stripe. The nanoline is a perfectly straight and defect free endotaxial structure of huge aspect ratio; it can grow micrometer long at a constant width of exactly four Si dimers (1.54 nm). 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.
Authors:
; ; ; ;  [1] ;  [2]
  1. Department of Condensed Matter Physics, NCCR MaNEP, University of Geneva, 24 Quai Ernest-Ansermet, 1211 Geneva 4 (Switzerland)
  2. Department of Physics and Astronomy, University College London, Gower St, London WC1E 6BT, UK and London Centre for Nanotechnology, 17-19 Gordon St, London WC1H 0AH (United Kingdom)
Publication Date:
OSTI Identifier:
22261877
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1566; Journal Issue: 1; Conference: ICPS 2012: 31. international conference on the physics of semiconductors, Zurich (Switzerland), 29 Jul - 3 Aug 2012; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; DENSITY; DENSITY FUNCTIONAL METHOD; SCANNING TUNNELING MICROSCOPY; SILICON; SOLIDS; SURFACES