Energy current magnification in coupled oscillator loops

Marathe, Rahul ; Dhar, Abhishek ; Jayannavar, A. (2010) Energy current magnification in coupled oscillator loops Physical Review E - Statistical, Nonlinear and Soft Matter Physics, 82 (3). 031117_1-031117_4. ISSN 1539-3755

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Motivated by studies on current magnification in quantum mesoscopic systems, we consider sound and heat transmission in classical models of oscillator chains. A loop of coupled oscillators is connected to two leads through which one can either transmit monochromatic waves or white-noise signal from heat baths. We look for the possibility of current magnification in this system due to some asymmetry introduced between the two arms in the loop. We find that current magnification is indeed obtained for particular frequency ranges. However, the integrated current shows the effect only in the presence of a pinning potential for the atoms in the leads. We also study the effect of anharmonicity on current magnification.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:94418
Deposited On:15 Nov 2012 05:27
Last Modified:15 Nov 2012 05:27

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