Journal
APPLIED PHYSICS LETTERS
Volume 81, Issue 23, Pages 4428-4430Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1525056
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Using dynamic force microscopy and spectroscopy in an ultrahigh vacuum (noncontact atomic force microscopy) at low temperatures, we measured three-dimensional force fields with atomic resolution. The method is based on the systematic recording of the frequency shift of a cantilever oscillating near the sample surface. The presented experimental results were obtained on a NiO(001) sample surface with an iron-coated silicon tip, but the measurement principle can be extended to any tip-sample system. (C) 2002 American Institute of Physics.
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