Experimental aspects of dissipation force microscopy

Autor: Ch. Loppacher, Roland Bennewitz, Alexis Baratoff, S. Schär, V. Barwich, M. Guggisberg, O. Pfeiffer, M. Bammerlin, Ernst Meyer
Rok vydání: 2000
Předmět:
Zdroj: Physical Review B. 62:13674-13679
ISSN: 1095-3795
0163-1829
DOI: 10.1103/physrevb.62.13674
Popis: Experimental aspects of measuring dissipation on atomic scale using large-amplitude dynamic force microscopy are discussed. Dissipation versus distance curves reveal that long- and short-range forces contribute to the dissipation. The decay length of short-range contributions is found to be close to that of the tunneling current. The dependence of dissipation on the bias voltage and on the oscillation amplitude is presented. Atomic-scale lateral variations of dissipation are discussed, and the role of the atomic constitution of the tip for quantitative results is pointed out.
Databáze: OpenAIRE