ISSN:
1432-0630
Schlagwort(e):
PACS: 61.16.Ch; 68.35.Bs; 82.65.My
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Maschinenbau
,
Physik
Notizen:
60 molecules, adsorbed on Si(100)–(2×1) surfaces under ultra-high-vacuum conditions, can be obtained using scanning tunneling microscopy and spectroscopy. High-resolution images of individual C60 molecules, physisorbed (preannealed) and chemisorbed (postannealed) on different sites on the same sample, reveal clear intramolecular features superimposed on the molecules’ cage structure that are consistent with their bonding nature. Spectroscopic measurements of individual C60 molecules chemisorbed at these sites yield energy levels that exhibit a transition of their electronic structure from that of a near-free adsorbate to that of SiC. The spectroscopic data corresponds to the observed changes in local density of states. These results demonstrate the power of scanning tunneling microscopy to determine the electronic structure and bonding characteristics of individual molecules.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/s003390051110
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