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Coherent energy transport in classical nonlinear oscillators: An analogy with the Josephson effect
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory.
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2015 (English)In: Physical Review E. Statistical, Nonlinear, and Soft Matter Physics, ISSN 1539-3755, E-ISSN 1550-2376, Vol. 91, no 4, 040102Article in journal (Refereed) Published
Abstract [en]

By means of a simple theoretical model and numerical simulations, we demonstrate the presence of persistent energy currents in a lattice of classical nonlinear oscillators with uniform temperature and chemical potential. In analogy with the well-known Josephson effect, the currents are proportional to the sine of the phase differences between the oscillators. Our results elucidate general aspects of nonequilibrium thermodynamics and point towards a way to practically control transport phenomena in a large class of systems. We apply the model to describe the phase-controlled spin-wave current in a bilayer nanopillar.

Place, publisher, year, edition, pages
2015. Vol. 91, no 4, 040102
National Category
Physical Sciences
URN: urn:nbn:se:uu:diva-252995DOI: 10.1103/PhysRevE.91.040102ISI: 000353463600001OAI: oai:DiVA.org:uu-252995DiVA: diva2:812436
Available from: 2015-05-18 Created: 2015-05-18 Last updated: 2015-05-18Bibliographically approved

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Borlenghi, SimoneDelin, AnnaFransson, Jonas
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