Ranulfo Allen, John Baglin, et al.
J. Photopolym. Sci. Tech.
Individual pentacene and naphthalocyanine molecules adsorbed on a bilayer of NaCl grown on Cu(111) were investigated by means of scanning tunneling microscopy using CO-functionalized tips. The images of the frontier molecular orbitals show an increased lateral resolution compared with those of the bare tip and reflect the modulus squared of the lateral gradient of the wave functions. The contrast is explained by tunneling through the p-wave orbitals of the CO molecule. Comparison with calculations using a Tersoff-Hamann approach, including s- and p-wave tip states, demonstrates the significant contribution of p-wave tip states. © 2011 American Physical Society.
Ranulfo Allen, John Baglin, et al.
J. Photopolym. Sci. Tech.
S.F. Fan, W.B. Yun, et al.
Proceedings of SPIE 1989
A. Gangulee, F.M. D'Heurle
Thin Solid Films
Julian J. Hsieh
Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films