Shot noise control in ac-driven nanoscale conductors
- We derive within a time-dependent scattering formalism expressions for both the current through ac-driven nanoscale conductors and its fluctuations. The results for the time-dependent current, its time average, and, above all, the driven shot noise properties assume an explicit and serviceable form by relating the propagator to a non-Hermitian Floquet theory. The driven noise cannot be expressed in terms of transmission probabilities. The results are valid for a driving of arbitrary strength and frequency. The connection with commonly known approximation schemes such as the Tien-Gordon approach or a high-frequency approximation is elucidated together with a discussion of the corresponding validity regimes. Within this formalism, we study the coherent suppression of current and noise caused by properly chosen electromagnetic fields.
| Author: | Sébastien Camalet, Sigmund KohlerORCiDGND, Peter HänggiORCiDGND |
|---|---|
| URN: | urn:nbn:de:bvb:384-opus4-2871 |
| Frontdoor URL | https://opus.bibliothek.uni-augsburg.de/opus4/353 |
| Type: | Preprint |
| Language: | English |
| Publishing Institution: | Universität Augsburg |
| Release Date: | 2006/09/05 |
| Tag: | nanowires; shot noise; current fluctuations; mesoscopic systems |
| GND-Keyword: | Nanodraht; Schrotrauschen; Fluktuation <Physik>; Mesoskopisches System |
| Source: | erschienen in: Phys. Rev. B 70, 155326 (2004); DOI: 10.1103/PhysRevB.70.155326; URL: http://link.aps.org/abstract/PRB/v70/e155326 |
| Institutes: | Mathematisch-Naturwissenschaftlich-Technische Fakultät |
| Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Physik | |
| Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Physik / Lehrstuhl für Theoretische Physik I | |
| Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
