Journal
APPLIED PHYSICS LETTERS
Volume 110, Issue 13, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4979408
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Funding
- Foundation for Fundamental Research on Matter (FOM)
- DFG Priority Programme 1538 Spin-Caloric Transport [KU 3271/1-1]
- NanoLab NL, EU FP7 ICT Grant InSpin [612759]
- Zernike Institute for Advanced Materials
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We report magnon spin transport in nickel ferrite platinum (Pt)/(NiFe2O4, NFO) bilayer systems at room temperature. A nonlocal geometry is employed, where the magnons are excited by the spin Hall effect or by the Joule heating induced spin Seebeck effect at the Pt injector and detected at a certain distance away by the inverse spin Hall effect at the Pt detector. The dependence of the nonlocal magnon spin signals as a function of the magnetic field is closely related to the NFO magnetization behavior. In contrast, we observe that the magnetoresistance measured locally at the Pt injector does not show a clear relationship with the average NFO magnetization. We obtain a magnon spin relaxation length of 3.1 +/- 0.2 mu m in the investigated NFO samples. Published by AIP Publishing.
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