UCL  IRIS
Institutional Research Information Service
UCL Logo
Please report any queries concerning the funding data shown on the profile page to:

http://www.ucl.ac.uk/finance/secure/research/post_award
Please report any queries concerning the student data shown on the profile page to:

Email: portico-services@ucl.ac.uk

Help Desk: http://www.ucl.ac.uk/ras/portico/helpdesk
Publication Detail
Model system for controlling strain in silicon at the atomic scale
  • Publication Type:
    Journal article
  • Publication Sub Type:
    Article
  • Authors:
    Studer P, Schofield SR, Lever G, Bowler DR, Hirjibehedin CF, Curson NJ
  • Publisher:
    AMER PHYSICAL SOC
  • Publication date:
    22/07/2011
  • Journal:
    PHYS REV B
  • Volume:
    84
  • Issue:
    4
  • Print ISSN:
    1098-0121
  • Language:
    EN
  • Keywords:
    DOMAIN BOUNDARIES, SURFACES, ENERGY, STM, RECONSTRUCTION, DOPANTS
  • Addresses:
    Studer, P
    UCL
    London Ctr Nanotechnol
    London
    WC1H 0AH
    England

    UCL
    Dept Elect & Elect Engn
    London
    WC1E 7JE
    England

    UCL
    Dept Chem
    London
    WC1H 0AJ
    England
Abstract
Strain induced by antiphase boundaries (APBs) in the Si(111) 2 x 1 surface is investigated using scanning tunneling microscopy (STM), laterally resolved scanning tunneling spectroscopy (STS), and density functional theory (DFT). We determine the structure of all identified APB reconstructions and show that a band shift of states close to the Fermi energy leads to the previously observed electronic contrast. The orientation of the band shift and the observed movement of APBs within the surface are explained by surface strain resulting from the excess free energy of the boundary. We demonstrate that the location of APBs and their associated strain can be precisely manipulated, making them an ideal model system to study and control strain at the atomic scale.
Publication data is maintained in RPS. Visit https://rps.ucl.ac.uk
 More search options
UCL Authors Show More
Dept of Physics & Astronomy
London Centre for Nanotechnology
London Centre for Nanotechnology
London Centre for Nanotechnology
University College London - Gower Street - London - WC1E 6BT Tel:+44 (0)20 7679 2000

© UCL 1999–2011

Search by