Threefold Electron Scattering on Graphite Observed with C 60 -Adsorbed STM Tips
- 6 September 1996
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 273 (5280) , 1371-1373
- https://doi.org/10.1126/science.273.5280.1371
Abstract
The scanning tunneling microscope (STM) has been used to observe threefold symmetric electron scattering from point defects on a graphite surface. These theoretically predicted electronic perturbations could not be observed with a bare metal tip but could only be imaged when a fullerene (C60) molecule was adsorbed onto the tunneling region (apex) of an STM tip. Functionalizing an STM tip with an appropriate molecular adsorbate alters the density of states near the Fermi level of the tip and changes its imaging characteristics.Keywords
This publication has 20 references indexed in Scilit:
- In situ control and analysis of the scanning tunneling microscope tip by formation of sharp needles on the Si sample and W tipJournal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures, 1996
- van der Waals attraction between twofullerene molecules and physical adsorption ofon graphite and other substratesPhysical Review B, 1994
- Confinement of Electrons to Quantum Corrals on a Metal SurfaceScience, 1993
- Site-selective imaging in scanning tunneling microscopy of graphite: The nature of site asymmetryPhysical Review B, 1993
- Scanning Tunnelling Microscopy Study of C 60 on Polycrystalline PlatinumEurophysics Letters, 1992
- Internal structure and two-dimensional order of monolayer C60 molecules on gold substrateJournal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures, 1992
- bonding and energy-level alignment on metal and semiconductor surfacesPhysical Review B, 1991
- The effects of low-energy ion impacts on graphite observed by scanning tunneling microscopyJournal of Vacuum Science & Technology A, 1991
- Periodic charge-density modulations on graphite near platinum particlesPhysical Review B, 1991
- Theory and observation of highly asymmetric atomic structure in scanning-tunneling-microscopy images of graphitePhysical Review B, 1987