Surface sensitivity of the spin Seebeck effect

Journal Article · Tue Oct 21 00:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4897933· OSTI ID:22305824

Aqeel, A.; Vera-Marun, I. J.; Wees, B. J. van; Palstra, T. T. M., ^[1]

---

1. Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen (Netherlands)

We have investigated the influence of the interface quality on the spin Seebeck effect (SSE) of the bilayer system yttrium iron garnet (YIG)–platinum (Pt). The magnitude and shape of the SSE is strongly influenced by mechanical treatment of the YIG single crystal surface. We observe that the saturation magnetic field (H{sub sat}{sup SSE}) for the SSE signal increases from 55.3 mT to 72.8 mT with mechanical treatment. The change in the magnitude of H{sub sat}{sup SSE} can be attributed to the presence of a perpendicular magnetic anisotropy due to the treatment induced surface strain or shape anisotropy in the Pt/YIG system. Our results show that the SSE is a powerful tool to investigate magnetic anisotropy at the interface.

• OSTI ID: 22305824
• Journal Information: Journal of Applied Physics, Vol. 116, Issue 15; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Publisher: American Institute of Physics (AIP)
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANISOTROPY
FERRITE GARNETS
INTERFACES
IRON OXIDES
LAYERS
MAGNETIC FIELDS
MONOCRYSTALS
PLATINUM
SATURATION
SEEBECK EFFECT
SENSITIVITY
SPIN
STRAINS
SURFACES
YTTRIUM COMPOUNDS