D. Rakhmilevitch, R. Korytar, A. Bagrets, F. Evers, O. Tal

Phys. Rev. Lett. 113, 236603 (2014)

The interaction of individual electrons with vibrations has been extensively studied. However,
the nature of the electron-vibration interaction in the presence of many-body electron correlation
such as a Kondo state has not been fully investigated. Here, we present transport measurements
on a Copper-phthalocyanine molecule, suspended between two silver electrodes in a break-junction
setup. Our measurements reveal both zero-bias and satellite conductance peaks, which are identifi ed
as Kondo resonances with a similar Kondo temperature. The relation of the satellite peaks to
electron-vibration interaction is corroborated using several independent spectroscopic indications,
as well as ab-initio calculations. Further analysis reveals that the contribution of vibration-induced
inelastic current is significant in the presence of a Kondo resonance.