Electrostatic ordering of the lanthanum endoatom in La@C 82 adsorbed on metal surfaces

C. Ton-That, M. E. Welland, J. A. Larsson, J. C. Greer, A. G. Shard, V. R. Dhanak, A. Taninaka, H. Shinohara

Research output: Journal PublicationArticlepeer-review

14 Citations (Scopus)


An investigation of the dynamic behavior of the endohedral La atom in La@C 82 adsorbed on Ag(111) or Cu(111) using the normal-incidence x-ray standing wavefield (NIXSW) technique is presented. For the surface-normal (111) reflection, NIXSW demonstrates different La absorption profiles between the La@C 82 monolayer and multilayer. Analysis of the profiles reveals significant La ordering in the monolayer; the degree of ordering increases as the film is cooled. First-principles calculations provide a description of the endohedral metal atom-cage bonding and the fullerene-surface interaction. Combined, these effects give rise to preferential binding sites for the endoatom resulting from electrostatic interactions within the adsorbed fullerene.

Original languageEnglish
Article number045419
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number4
Publication statusPublished - Jan 2005
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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