Excitation of molecular vibrational modes with inelastic scanning tunneling microscopy processes: examination through action spectra of cis-2-butene on Pd(110).
Inelastically tunneled electrons from a scanning tunneling microscope (STM) were used to induce vibrationally mediated motion of a single cis-2-butene molecule among four equivalent orientations on Pd(110) at 4.8 K. The action spectrum obtained from the motion clearly detects more vibrational modes than inelastic electron tunneling spectroscopy with a STM. We demonstrate the usefulness of the action spectroscopy as a novel single molecule vibrational spectroscopic method. We also discuss its selection rules in terms of resonance tunneling.
Sainoo
Yasuyuki
Y
RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
Kim
Yousoo
Y
Okawa
Toshiro
T
Komeda
Tadahiro
T
Shigekawa
Hidemi
H
Kawai
Maki
M