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Nanoscale control of heat and spin conduction in artificial spin chains
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory.
Royal Inst Technol, Dept Mat & Nanophys, Sch Informat & Commun Technol, Electrum 229, SE-16440 Kista, Sweden..
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory. Royal Inst Technol, Dept Mat & Nanophys, Sch Informat & Commun Technol, Electrum 229, SE-16440 Kista, Sweden.;KTH Royal Inst Technol, Swedish E Sci Res Ctr SeRC, SE-10044 Stockholm, Sweden..
2016 (English)In: Physical Review B, ISSN 2469-9950, E-ISSN 2469-9969, Vol. 94, no 13, article id 134419Article in journal (Refereed) Published
Abstract [en]

We describe a mechanism to control the energy and magnetization currents in an artificial spin chain, consisting of an array of permalloy nanodisks coupled through a magnetodipolar interaction. The chain is kept out of equilibrium by two thermal baths with different temperatures connected to its ends, which control the current propagation. Transport is enhanced by applying a uniform radio-frequency pump field resonating with some of the spin-wave modes of the chain. Moreover, the two currents can be controlled independently by tuning the static field applied on the chain. Thus we describe two effective means for the independent control of coupled currents and the enhancement of thermal and spin-wave conductivity in a realistic magnonics device, suggesting that similar effects could be observed in a large class of nonlinear oscillating systems.

Place, publisher, year, edition, pages
2016. Vol. 94, no 13, article id 134419
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:uu:diva-308647DOI: 10.1103/PhysRevB.94.134419ISI: 000386089600002OAI: oai:DiVA.org:uu-308647DiVA, id: diva2:1050734
Funder
Stiftelsen Olle Engkvist ByggmästareSwedish Research CouncilThe Royal Swedish Academy of SciencesKnut and Alice Wallenberg FoundationSwedish Energy AgencySwedish Foundation for Strategic Research Carl Tryggers foundation eSSENCE - An eScience CollaborationGöran Gustafsson Foundation for promotion of scientific research at Uppala University and Royal Institute of TechnologyAvailable from: 2016-11-30 Created: 2016-11-29 Last updated: 2017-11-29Bibliographically approved

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