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SPM Imaging of Trinaphthylene Molecular States on a Hydrogen Passivated Ge(001) Surface

  • Marek KolmerEmail author
  • Szymon Godlewski
  • Bartosz Such
  • Paula de Mendoza
  • Claudia De Leon
  • Antonio M. Echavarren
  • Hiroyo Kawai
  • Mark Saeys
  • Christian Joachim
  • Marek Szymonski
Conference paper
Part of the Advances in Atom and Single Molecule Machines book series (AASMM)

Abstract

We report on studies concerning individual trinaphthylene molecules (Y molecules) deposited and anchored on the hydrogenated Ge(001):H surface. The characterization of single Y molecules has been performed by means of cryogenic temperature STM imaging using conventional STM tungsten tips and tuning fork-based sensors. In the latter case, a qPlus sensor facilitated simultaneous STM and NC-AFM measurements and thus molecular states were probed by both tunneling current and atomic forces concurrently. We show that the molecules are physisorbed, thus weakly interacting with the substrate. Contrary to the measurements on hydrogenated silicon, for planar aromatic molecules on the hydrogenated germanium, both empty and filled molecular states could be probed by STM.

Keywords

Heptastarphene molecules Scanning tunneling microscopy Non-contact atomic force microscopy Molecular state imaging Electronic decoupling of molecules on surfaces Hydrogen passivated germanium Ge(001): H 

Notes

Acknowledgments

This research was supported by the 7th Framework Programme of the European Union Collaborative Project ICT (Information and Communication Technologies) “Atomic Scale and Single Molecule Logic Gate Technologies” (ATMOL), Contract No. FP7-270028. The experimental part of the research was carried out with equipment purchased with financial support from the European Regional Development Fund in the framework of the Polish Innovation Economy Operational Program (Contract No. POIG.02.01.00-12-023/08).

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Marek Kolmer
    • 1
    Email author
  • Szymon Godlewski
    • 1
  • Bartosz Such
    • 1
  • Paula de Mendoza
    • 2
  • Claudia De Leon
    • 2
  • Antonio M. Echavarren
    • 2
  • Hiroyo Kawai
    • 3
  • Mark Saeys
    • 3
    • 4
  • Christian Joachim
    • 3
    • 5
  • Marek Szymonski
    • 1
  1. 1.Centre for Nanometer-Scale Science and Advanced Materials, NANOSAMFaculty of Physics, Astronomy, and Applied Computer Science, Jagiellonian UniversityKrakowPoland
  2. 2.Institute of Chemical Research of Catalonia (ICIQ)TarragonaSpain
  3. 3.Institute of Materials Research and EngineeringSingaporeSingapore
  4. 4.Department of Chemical and Biomolecular EngineeringNational University of SingaporeSingaporeSingapore
  5. 5.Nanosciences Group & MANA SatelliteToulouseFrance

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