D'Amico, Pino and Ryndyk, Dmitry A. and Cuniberti, Gianaurelio and Richter, Klaus (2008) Charge-memory effect in a polaron model: equation-of-motion method for Green functions. NEW JOURNAL OF PHYSICS, 10: 085002. ISSN 1367-2630,
Full text not available from this repository. (Request a copy)Abstract
We analyze a single-level quantum system placed between metallic leads and strongly coupled to a localized vibrational mode, which models a single-molecule junction or an STM setup. We consider a polaron model describing the interaction between electronic and vibronic degrees of freedom and develop and examine different truncation schemes in the equation-of-motion method within the framework of nonequilibrium Green functions. We show that upon applying gate or bias voltage, it is possible to observe charge-bistability and hysteretic behavior which can be the basis of a charge-memory element. We further perform a systematic analysis of the bistability behavior of the system for different internal parameters such as the electron-vibron and the lead-molecule coupling strength.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | CONDUCTANCE; JUNCTIONS; TRANSPORT; MOLECULE; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Klaus Richter |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 26 Oct 2020 09:42 |
| Last Modified: | 26 Oct 2020 09:42 |
| URI: | https://pred.uni-regensburg.de/id/eprint/30486 |
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