Bulletin of Pure & Applied Sciences- Physics
  • Year: 2016
  • Volume: 35d
  • Issue: 1and2

Strong Electron-Phonon Interaction in A Suspended Carbon Nanotube

1Research Scholar, University Department of Physics, B.N. Mandal University, Madhepura, Bihar, India

2Department of Physics, P.R. Roy Degree College, Bairagania, Stimarhi, Bihar, India

3University Deptt. of Physics, B.N. Mandal University, Madhepura, Bihar, India

4Research Scholar, P.G., Department of Chemistry, Rajendra College, Chapra, Bihar, India

Online published on 10 January, 2017.

Abstract

We have developed an approach to calculate the full counting statistics of the Holstein polaron dot in a strong coupling regime. Using a polaron tunneling approximation we have derived an Levitov-Lesovik formula for the cumulant generating function with an effective normalized transmission coefficient. The effect of electron-phonon interactions on the charge transport through a contacted molecule was studied. We have simplified to contain a single electronic level linearly coupled to a local Holstein Phonon i.e. a bosonic oscillator degree of freedom with a single frequency. The vibrational modes of a such a quantum dot were also studied. We found the description of transport through molecules contacted using mechanically controlled break junctions.

Keywords

Statistics, Holstein, Polaron, dot, coupling, tunneling, Phonon, Comulant