Nanoscale control of heat and spin conduction in artificial spin chains
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
American Physical Society , 2016. Vol. 94, no 13, article id 134419
Keywords [en]
Spintronics, Ice
National Category
Other Physics Topics
Identifiers
URN: urn:nbn:se:kth:diva-196607DOI: 10.1103/PhysRevB.94.134419ISI: 000386089600002Scopus ID: 2-s2.0-84992035187OAI: oai:DiVA.org:kth-196607DiVA, id: diva2:1047309
Funder
Swedish e‐Science Research CenterSwedish Research CouncilKnut and Alice Wallenberg FoundationSwedish Energy AgencySwedish Foundation for Strategic Research Carl Tryggers foundation eSSENCE - An eScience Collaboration
Note
QC 20161117
2016-11-172016-11-172024-03-18Bibliographically approved