Tip-induced distortions in STM imaging of carbon nanotubes
- 69 Downloads
By means of STM measurements and fully self-consistent transport calculations we analyze how STM trajectories for the mapping of nanostructures on surfaces are affected by the atomic structure of the tip. For the particular case of carbon nanotubes we show that considerable distortions of the STM trajectory with respect to the actual structure, position and diameter of the nanotube can occur for certain tip geometries. Comparison between theory and experiment can allow to characterize and correct these distortions.
PACS.68.37.Ef Scanning tunneling microscopy (including chemistry induced with STM) 73.63.-b Electronic transport in nanoscale materials and structures 61.48.+c Fullerenes and fullerene-related materials
Unable to display preview. Download preview PDF.
- L.C. Venema, V. Meunier, Ph. Lambin, C. Dekker, Phys. Rev. B 61 2991 (2000) Google Scholar
- S. Datta, Electronic tranpsort in mesoscopic systems (Cambridge University Press, 1995) Google Scholar
- Physical properties of carbon nanotubes, edited by R. Saito, M.S. Dresselhaus, G. Dresselhaus (Imperial College Press, 1998) Google Scholar
- We believe that using a Au surface does not have any measurable influence on the discussed tip effect Google Scholar
- M. De Menech, U. Saalmann, M.E. Garcia, New J. Phys. (to be published, 2007) Google Scholar