TY - JOUR
T1 - Effects of coupling to vibrational modes on the ac conductance of molecular junctions
AU - Ueda, A.
AU - Entin-Wohlman, O.
AU - Aharony, A.
PY - 2011/4/21
Y1 - 2011/4/21
N2 - We theoretically examine the effect of the coupling of the transport electrons to a vibrational mode of the molecule on the ac linear-response conductance of molecular junctions. Representing the molecule by a single electronic state, we find that at very low temperatures the frequency-dependent conductance is mainly enhanced (suppressed) by the electron-vibration interaction when the chemical potential is below (above) the energy of that state. The vertex corrections of the electron-vibration interaction induce an additional peak structure in the conductance, which can be observed by tuning the tunnel couplings with the leads.
AB - We theoretically examine the effect of the coupling of the transport electrons to a vibrational mode of the molecule on the ac linear-response conductance of molecular junctions. Representing the molecule by a single electronic state, we find that at very low temperatures the frequency-dependent conductance is mainly enhanced (suppressed) by the electron-vibration interaction when the chemical potential is below (above) the energy of that state. The vertex corrections of the electron-vibration interaction induce an additional peak structure in the conductance, which can be observed by tuning the tunnel couplings with the leads.
UR - http://www.scopus.com/inward/record.url?scp=79961049019&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.83.155438
DO - 10.1103/PhysRevB.83.155438
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AN - SCOPUS:79961049019
SN - 1098-0121
VL - 83
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 15
M1 - 155438
ER -