QND theory of long range forces in AFM on Au(111) | Zendy

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QND theory of long range forces in AFM on Au(111)

Author(s) -

Drakova D.,

Doyen G.

Publication year - 2005

Publication title -

physica status solidi (b)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.51

H-Index - 109

eISSN - 1521-3951

pISSN - 0370-1972

DOI - 10.1002/pssb.200541171

Subject(s) - atomic force microscopy , tungsten , range (aeronautics) , surface (topology) , front (military) , electron , atomic physics , particle (ecology) , chemistry , nanotechnology , condensed matter physics , physics , molecular physics , materials science , quantum mechanics , geometry , composite material , oceanography , geology , meteorology , mathematics , organic chemistry

The nature of the long range forces in atomic force microscopy (AFM) between a tungsten tip and the Au(111) surface is studied within Quantum Nano Dynamics (QND), treating many‐particle interactions and long range screening effects. A new mechanism of long range forces between a neutral tip and a metal surface is suggested due to the interaction with the image potential in the tip and the sample of a single electron localized on the Au(111) surface in front of the tip, in the presence of the AFM tip, and the image screening it provides.Force between a W‐tip and Au(111) – measured in AFM (circles and crosses, left‐hand axis, Ref. [1]) and calcu‐lated within QND theory (full curve, right‐hand axis). (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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