6533b833fe1ef96bd129b7e0
RESEARCH PRODUCT
Temperature dependence of the non-local spin Seebeck effect in YIG/Pt nanostructures
Gerhard JakobSebastian T. B. GoennenweinKathrin GanzhornJoel CramerRichard SchlitzRichard SchlitzStephan GeprägsRudolf GrossRudolf GrossTobias WimmerMathias KläuiHans HueblHans Hueblsubject
Angular momentumMaterials science530 PhysicsFOS: Physical sciencesGeneral Physics and AstronomyInsulator (electricity)02 engineering and technology01 natural sciencesCondensed Matter::Materials ScienceFerrimagnetismHall effectMesoscale and Nanoscale Physics (cond-mat.mes-hall)0103 physical sciencesThermoelectric effectddc:530010306 general physicsCondensed Matter - Mesoscale and Nanoscale PhysicsCondensed matter physicsMagnon530 Physik021001 nanoscience & nanotechnologylcsh:QC1-999ddc:Excited stateSpin Hall effectCondensed Matter::Strongly Correlated Electrons0210 nano-technologylcsh:Physicsdescription
We study the transport of thermally excited non-equilibrium magnons through the ferrimagnetic insulator YIG using two electrically isolated Pt strips as injector and detector. The diffusing magnons induce a non-local inverse spin Hall voltage in the detector corresponding to the so-called non-local spin Seebeck effect (SSE). We measure the non-local SSE as a function of temperature and strip separation. In experiments at room temperature we observe a sign change of the non-local SSE voltage at a characteristic strip separation d0, in agreement with previous investigations. At lower temperatures however, we find a strong temperature dependence of d0. This suggests that both the angular momentum transfer across the YIG/Pt interface as well as the transport mechanism of the magnons in YIG as a function of temperature must be taken into account to describe the non-local SSE. published
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-01-10 | AIP Advances |