Mobility and bonding transition of C60 on Pd(110)

J. Weckesser, J. V. Barth, K. Kern

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75 Scopus citations

Abstract

Mobility and bonding of C60 on a Pd(110) surface were characterized by variable temperature scanning tunneling microscopy. Following adsorption at intermediate temperatures (435-485 K) the motion of single molecules could be directly monitored, and the corresponding tracer diffusion barrier was determined to be (1.4±0.2) eV. Upon annealing to ≈700 K the molecules undergo an irreversible bonding transition resulting in a second, more strongly bound C60 species with different imaging characteristics. This is attributed to a local surface reconstruction where C60 sinks into the formed microscopic pits. The findings demonstrate that substrate restructuring may account for the coexistence of distinct C60 species at surfaces.

Original languageEnglish
Article number161403
Pages (from-to)1614031-1614034
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume64
Issue number16
StatePublished - 15 Oct 2001
Externally publishedYes

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