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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/1162

Title: Current hysteresis and memory effect in a molecular quantum dot with strong electron-vibron interaction
Authors: Alexandrov, A.S.
Bratkovsky, A.M.
Issue Date: 2002
Abstract: 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.
Description: This is a pre-print. It is also available at: http://arxiv.org/abs/cond-mat/0212424.
URI: https://dspace.lboro.ac.uk/2134/1162
Appears in Collections:Pre-Prints (Physics)

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