https://doi.org/10.1140/epjb/e2011-10982-7
Resonance effects in the nonadiabatic nonlinear quantum dimer
1
D A Institute of Information & Communication Technology (DA-IICT), 382007 Gandhinagar, India
2
Consortium of the Americas for Interdisciplinary Sciences, University of New Mexico, Albuquerque, New Mexico, 87131-1156, USA
3
Department of Physics & Astronomy, University of New Mexico, Albuquerque, New Mexico, 87131-1156, USA
Corresponding author: a mukesh.tiwari@gmail.com
Received:
16
December
2010
Published online:
4
May
2011
The quantum nonlinear dimer consisting of an electron shuttling between two sites and in weak interaction with vibrations, is studied numerically under the application of a DC electric field. A field-induced resonance phenomenon between the vibrations and the electronic oscillations is found to influence the electronic transport greatly. For initial delocalization of the electron, resonance has the effect of a dramatic increase in the transport. Nonlinear frequency mixing is identified as the main mechanism that influences transport. A characterization of the frequency spectrum is also presented.
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2011