Loughborough University
Browse
alexandrov.pdf (190.96 kB)

Current hysteresis and memory effect in a molecular quantum dot with strong electron-vibron interaction

Download (190.96 kB)
preprint
posted on 2006-04-03, 15:49 authored by A.S. Alexandrov, A.M. Bratkovsky
Theory of current hysteresis for tunneling through a molecular quantum dot (MQD) with strong electron-vibron interactions and attractive electron-electron correlations is developed. The dot is modeled as a d-fold degenerate energy level weakly coupled to the leads. The effective attractive interaction between polarons in the dot results in a "switching" phenomenon in the current-voltage characteristics when d>2, in agreement with the results for the phenomenological negative-U model. The degenerate MQD with strong electron-vibron coupling has two stable current states in certain interval of the bias voltage below some critical temperature.

History

School

  • Science

Department

  • Physics

Pages

195540 bytes

Publication date

2002

Notes

This is a pre-print. It is also available at: http://arxiv.org/abs/cond-mat/0212424.

Language

  • en

Usage metrics

    Loughborough Publications

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC