Excitation of molecular vibrational modes with inelastic scanning tunneling microscopy processes: examination through action spectra of cis-2-butene on Pd(110) |
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Authors: | Sainoo Yasuyuki Kim Yousoo Okawa Toshiro Komeda Tadahiro Shigekawa Hidemi Kawai Maki |
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Institution: | RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan. |
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Abstract: | 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. |
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