Violation of the Fluctuation-Dissipation Theorem in Time-Dependent Mesoscopic Heat Transport

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© 2010 American Physical Society (APS). http://www.aps.org/
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School of Science | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

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en

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220601-1-4

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Physical Review Letters, Volume 104, Issue 22

Abstract

We have analyzed the spectral density of fluctuations of the energy flux through a mesoscopic constriction between two equilibrium reservoirs. It is shown that at finite frequencies, the fluctuating energy flux is not related to the thermal conductance of the constriction by the standard fluctuation-dissipation theorem, but contains additional noise. The main physical consequence of this extra noise is that the fluctuations do not vanish at zero temperature together with the vanishing thermal conductance.

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Averin, Dmitri V. & Pekola, Jukka. 2010. Violation of the Fluctuation-Dissipation Theorem in Time-Dependent Mesoscopic Heat Transport. Physical Review Letters. Volume 104, Issue 22. P. 220601-1-4. ISSN 0031-9007 (printed). DOI: 10.1103/physrevlett.104.220601.