Microwave-induced spin currents in ferromagnetic-insulator|normal-metal bilayer system

Journal Article · Mon Sep 01 00:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4894636· OSTI ID:22311023

Agrawal, Milan ^[1]; Serga, Alexander A.; Lauer, Viktor; Papaioannou, Evangelos Th.; Hillebrands, Burkard; Vasyuchka, Vitaliy I. ^[1]

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1. Fachbereich Physik and Landesforschungszentrum OPTIMAS, Technische Universität Kaiserslautern, 67663 Kaiserslautern (Germany)

A microwave technique is employed to simultaneously examine the spin pumping and the spin Seebeck effect processes in a YIG|Pt bilayer system. The experimental results show that for these two processes, the spin current flows in opposite directions. The temporal dynamics of the longitudinal spin Seebeck effect exhibits that the effect depends on the diffusion of bulk thermal-magnons in the thermal gradient in the ferromagnetic-insulator|normal-metal system.

• OSTI ID: 22311023
• Journal Information: Applied Physics Letters, Vol. 105, Issue 9; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CURRENTS
DIELECTRIC MATERIALS
DIFFUSION
FERRITE GARNETS
FERROMAGNETIC MATERIALS
IRON OXIDES
LAYERS
METALS
MICROWAVE RADIATION
PLATINUM
PUMPING
SEEBECK EFFECT
SPIN
TEMPERATURE GRADIENTS
YTTRIUM COMPOUNDS