Web of Science: 21 cites, Scopus: 21 cites, Google Scholar: cites,
Stochastic thermodynamics of self-oscillations : the electron shuttle
Wächtler, Christopher W. (Technical University Berlin. Institute of Theoretical Physics (Germany))
Strasberg, Philipp (Universitat Autònoma de Barcelona. Departament de Física)
Klapp, Sabine H. L. (Technical University Berlin. Institute of Theoretical Physics (Germany))
Schaller, Gernot (Technical University Berlin. Institute of Theoretical Physics (Germany))
Jarzynski, Christopher (University of Maryland. Institute for Physical Science and Technology (USA))

Data: 2019
Resum: Self-oscillation is a phenomenon studied across many scientific disciplines, including the engineering of efficient heat engines and electric generators. We investigate the single electron shuttle, a model nano-scale system that exhibits a spontaneous transition towards self-oscillation, from a thermodynamic perspective. We analyse the model at three different levels of description: The fully stochastic level based on Fokker-Planck and Langevin equations, the mean-field (MF) level, and a perturbative solution to the Fokker-Planck equation that works particularly well for small oscillation amplitudes. We provide consistent derivations of the laws of thermodynamics for this model system at each of these levels. At the MF level, an abrupt transition to self-oscillation arises from a Hopf bifurcation of the deterministic equations of motion. At the stochastic level, this transition is smeared out by noise, but vestiges of the bifurcation remain visible in the stationary probability density. At all levels of description, the transition towards self-oscillation is reflected in thermodynamic quantities such as heat flow, work and entropy production rate. Our analysis provides a comprehensive picture of a nano-scale self-oscillating system, with stochastic and deterministic models linked by a unifying thermodynamic perspective.
Ajuts: European Commission 681456
Drets: Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. Creative Commons
Llengua: Anglès
Document: Article ; recerca ; Versió publicada
Matèria: Stochastic thermodynamics ; Electron shuttle ; Self-oscillation ; Nanoscale ; Nonlinear systems ; Electron transport ; Autonomous engines
Publicat a: New journal of physics, Vol. 21, Issue 7 (July 2019) , art. 073009, ISSN 1367-2630

DOI: 10.1088/1367-2630/ab2727


27 p, 1.2 MB

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 Registre creat el 2020-06-03, darrera modificació el 2022-07-30



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