Optical detection of spin transport in nonmagnetic metals

Optical detection of spin transport in nonmagnetic metals

We determine the dynamic magnetization induced in nonmagnetic metal wedges composed of silver, copper, and platinum by means of Brillouin light scattering microscopy. The magnetization is transferred from a ferromagnetic Ni80Fe20 layer to the metal wedge via the spin pumping effect. The spin pumping...

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Veröffentlicht in:Physical review letters 2011-06, Vol.106 (22), p.226601-226601, Article 226601
Hauptverfasser: Fohr, F, Kaltenborn, S, Hamrle, J, Schultheiss, H, Serga, A A, Schneider, H C, Hillebrands, B, Fukuma, Y, Wang, L, Otani, Y
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container_issue 22
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container_title Physical review letters
container_volume 106
creator Fohr, F
Kaltenborn, S
Hamrle, J
Schultheiss, H
Serga, A A
Schneider, H C
Hillebrands, B
Fukuma, Y
Wang, L
Otani, Y
description We determine the dynamic magnetization induced in nonmagnetic metal wedges composed of silver, copper, and platinum by means of Brillouin light scattering microscopy. The magnetization is transferred from a ferromagnetic Ni80Fe20 layer to the metal wedge via the spin pumping effect. The spin pumping efficiency can be controlled by adding an insulating interlayer between the magnetic and nonmagnetic layer. By comparing the experimental results to a dynamical macroscopic spin-transport model we determine the transverse relaxation time of the pumped spin current which is much smaller than the longitudinal relaxation time.
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title Optical detection of spin transport in nonmagnetic metals
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