Coherent energy transport in classical nonlinear oscillators: An analogy with the Josephson effect
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
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
IdentifiersURN: urn:nbn:se:kth:diva-171692DOI: 10.1103/PhysRevE.91.040102ISI: 000353463600001ScopusID: 2-s2.0-84929103457OAI: oai:DiVA.org:kth-171692DiVA: diva2:844740
FunderSwedish Research CouncilSwedish Energy AgencyKnut and Alice Wallenberg FoundationSwedish e‐Science Research CenterSwedish Foundation for Strategic Research EU, FP7, Seventh Framework Programme, GA 323901
QC 201508072015-08-072015-08-052015-08-07Bibliographically approved