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Applied Physics Letters / Volume 94 / Issue 4 / NANOSCALE SCIENCE AND DESIGN

Appl. Phys. Lett. 94, 043110 (2009); http://dx.doi.org/10.1063/1.3075054 (3 pages)

Dynamic scanning probe microscopy of adsorbed molecules on graphite

N. Berdunov, A. J. Pollard, and P. H. Beton

School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD, United Kingdom

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(Received 5 August 2008; accepted 6 January 2009; published online 27 January 2009)

We have used a combined dynamic scanning tunneling and atomic force microscope to study the organization of weakly bound adsorbed molecules on a graphite substrate. These weakly bound molecules may be imaged in dynamic scanning tunneling microscopy (STM) mode in which the probe is oscillated above the surface. We show that molecular resolution may be readily attained and that a similar mode of imaging may be realized using conventional STM arrangement. We also show, using tunneling spectroscopy, the presence of an energy gap for the adsorbed molecules confirming a weak molecule-substrate interaction.

© 2009 American Institute of Physics

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KEYWORDS and PACS

Keywords

adsorbed layers, atomic force microscopy, energy gap, graphite, organic compounds, scanning tunnelling microscopy

PACS

  • 68.43.Fg

    Adsorbate structure (binding sites, geometry)

  • 68.37.Ef

    Scanning tunneling microscopy (including chemistry induced with STM)

  • 68.37.Ps

    Atomic force microscopy (AFM)

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3075054

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    A. Mayer, Appl. Phys. Lett. 86, 153110 (2005)APPLAB000086000015153110000001.

    S. Hembacher, F. J. Giessibl, and J. Mannhart, Phys. Rev. Lett. 94, 056101 (2005).

    P. Zahl, M. Bierkandt, S. Schröder, and A. Klust, Rev. Sci. Instrum. 74, 1222 (2003)RSINAK000074000003001222000001.

    I. Horcas, R. Fernandez, J. M. Gomez-Rodriguez, J. Colchero, J. Gomez-Herrero, and A. M. Baro, Rev. Sci. Instrum. 78, 013705 (2007)RSINAK000078000001013705000001.

    G. Binnig, H. Rohrer, C. Gerber, and E. Weibel, Appl. Phys. Lett. 40, 178 (1982)APPLAB000040000002000178000001.


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