Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Vibration-mediated resonant tunneling and shot noise through a molecular
  quantum dot   Motivated by a recent experiment on nonlinear tunneling in a suspended Carbon
nanotube connected to two normal electrodes [S. Sapmaz, {\it et al}., Phys.
Rev. Lett. {\bf 96}, 26801 (2006)], we investigate nonequilibrium
vibration-mediated sequential tunneling through a molecular quantum dot with
two electronic orbitals asymmetrically coupled to two electrodes and strongly
interacting with an internal vibrational mode, which is itself weakly coupled
to a dissipative phonon bath. For this purpose, we establish rate equations
using a generic quantum Langevin equation approach. Based on these equations,
we study in detail the current-voltage characteristics and zero-frequency shot
noise, paying special attention to the advanced or postponed of the appearance
of negative differential conductance and super-Poissonian current noise
resulting from electron-phonon-coupling induced {\em selective unidirectional
cascades of single-electron transitions}.

31
The categories of this paper are: ao-sci
11
The categories of this paper are: hep-lat
27
The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con
24
The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th
36
The categories of this paper are: cmp-lg
2
The categories of this paper are: math
19
The categories of this paper are: eess
18
The categories of this paper are: econ
8
The categories of this paper are: hep-ex
25
The categories of this paper are: patt-sol
28
The categories of this paper are: alg-geom
26
The categories of this paper are: bayes-an