Kramers barrier crossing as a cooling machine
arXiv:1002.4556 · doi:10.1016/j.chemphys.2010.05.034
Abstract
The achievement of local cooling is a prominent goal in the design of functional transport nanojunctions. One generic mechanism for local cooling is driving a system through a local uphill potential step. In this paper we examine the manifestation of this mechanism in the context of the Kramers barrier crossing problem. For a particle crossing a barrier, the local effective temperature and the local energy exchange with the thermal environment are calculated, and the coefficient of performance of the ensuing cooling process is evaluated.
12 pages, 5 figures
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Cited by in corpus (4)
- Resonant Electron Transport in Single-Molecule Junctions: Vibrational Excitation, Rectification, Negative Differential Resistance and Local Cooling
- Electron transfer across a thermal gradient
- Bias-Controlled Selective Excitation of Vibrational Modes in Molecular Junctions: A Route Towards Mode-Selective Chemistry
- Vibrational cooling and thermoelectric response of nanoelectromechanical systems