Mapping atomic contact between pentacene and a Au surface using scanning tunneling spectroscopy.
We mapped spatially varying intramolecular electronic structures on a pentacene-gold interface using scanning tunneling spectroscopy. Along with ab initio calculations based on density functional theory, we found that the directional nature of the d orbitals of Au atoms plays an important role in the interaction at the pentacene-gold contact. The gold-induced interface states are broadened and shifted by various pentacene-gold distances determined by the various registries of a pentacene molecule on a gold substrate.
Department of Physics, Seoul National University, Seoul 151-747, Korea. yjsong@nist.gov
Young Jae
YJ
Song
Kyuho
K
Lee
Seong Heon
SH
Kim
Byoung-Young
BY
Choi
Jaejun
J
Yu
Young
Y
Kuk
D003198:Computer Simulation; D006046:Gold / Q000737:chemistry*; D008422:Materials Testing; D016252:Microscopy, Scanning Tunneling / Q000379:methods*; D008956:Models, Chemical; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D009279:Naphthacenes / Q000737:chemistry*; D010316:Particle Size; D013499:Surface Properties
D009279:Naphthacenes; D006046:Gold; C523499:pentacene