Title | Excitation of Jahn-Teller Active Modes during Electron Transport through Single C60 Molecules on Metal Surfaces |
Authors | Katharina J. Franke, Gunnar Schulze, and Jose Ignacio Pascual |
Journal | Journal of Physical Chemistry Letters |
2010 | |
Keywords | Inelastic Tunnling Spectroscopy, Jahn-Teller active modes, Fullerene, C60 |
Abstract | Using scanning tunneling spectroscopy, we resolve all Jahn-Teller active Hg modes of a single C60 molecule when adsorbed on a Pb(111) surface. Selection rules for vibrational excitation in inelastic tunneling spectra are thus given by the electron-phonon coupling in the molecular orbital close to the Fermi level. The observation of modes depends, however, crucially on the orbital alignment. In particular, inelastic spectra in a resonant tunneling regime, as realized by adsorption of C60 on Cu(111), show no vibrational fingerprint |
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