Kramers barrier crossing as a cooling machine

Philip R. Schiff, Abraham Nitzan*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


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.

Original languageEnglish
Pages (from-to)399-402
Number of pages4
JournalChemical Physics
Issue number2-3
StatePublished - 5 Oct 2010


FundersFunder number
European Science Council
German Israeli Foundation
Seventh Framework Programme226628
European Research Council
Israel Science Foundation
Seventh Framework Programme


    • Barrier crossing
    • Cooling
    • Fokker-Planck equation


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