Giessibl, Franz J. and Bielefeldt, Hartmut and Hembacher, Stefan and Mannhart, Jochen (2001) Imaging of atomic orbitals with the Atomic Force Microscope — experiments and simulations. Annalen der Physik 10 (11-12), pp. 887-910.
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Atomic force microscopy (AFM) is a mechanical profiling technique that allows to image surfaces with atomic resolution. Recent progress in reducing the noise of this technique has led to a resolution level where previously undetectable symmetries of the images of single atoms are observed. These symmetries are related to the nature of the interatomic forces. The Si(111)-(7 × 7) surface is studied by AFM with various tips and AFM images are simulated with chemical and electrostatic model forces. The calculation of images from the tip-sample forces is explained in detail and the implications of the imaging parameters are discussed. Because the structure of the Si(111)-(7 × 7) surface is known very well, the shape of the adatom images is used to determine the tip structure. The observability of atomic orbitals by AFM and scanning tunneling microscopy is discussed.
|Institutions:||Physics > Institute of Experimental and Applied Physics > Chair Professor Giessibl > Group Franz J. Giessibl|
|Keywords:||atomic force microscope; atomic orbitals|
|Subjects:||500 Science > 530 Physics|
|Created at the University of Regensburg:||Unknown|
|Deposited On:||13 Jul 2012 10:03|
|Last Modified:||13 Sep 2012 13:36|
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