One-dimensional Mn atom chains templated on a Si(001) surface

ORAL

Abstract

Single-atom chains on a wide gap substrate are a very attractive embodiment of a truly one-dimensional system to explore the remarkable physical properties emerging in such low dimensions. We present self-assembled single-atom Mn chains on a Si(001) surface with Bi nanolines, which serve to increase greatly the average length of the Mn chains. They grow perpendicular to the Si(001) dimer rows, at densities which can be adjusted by means of the growth parameter. High resolution scanning tunneling microscopy (STM) micrographs are in perfect agreement with density functional theory (DFT), providing detailed insight into the chain structure. We further discuss low temperature STM spectroscopy and spin dependent DFT modeling suggesting Mn-chains are indeed a suitable candidate to observe electronic and magnetic properties in one-dimension experimentally.

*This work was supported by the MaNEP research program via the swiss national science foundation (SNF).

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Authors

  • Sigrun A. K\"{o}ster

    • University of Geneva
    • University of Geneva, Switzerland

  • James H.G. Owen

    • University of Geneva, Switzerland

  • Fran\c{c}ois Bianco

    • University of Geneva
    • University of Geneva, Switzerland

  • Alex M.P. Sena

    • University College London/London Centre for Nanotechnology, UK

  • David R. Bowler

    • University College London and London Centre for Nanotechnology
    • London Ctr. Nanotech. and Dept. Phys. \& Astron., UCL, London, UK
    • UCL, UK
    • University College London/London Centre for Nanotechnology, UK

  • Christoph Renner

    • University of Geneva, Switzerland
    • Universit\'e de Gen\`eve, Section de Physique/DPMC, Quai Ernest-Ansermet 24, 1211 Gen\`eve 4