Spin Pumping and the Inverse Spin-Hall Effect via Magnetostatic Surface Spin-Wave Modes in Yttrium-Iron Garnet/Platinum Bilayers

Balinsky, Michael (författare): Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU)

Ranjbar, Mojtaba (författare): Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU)

Haidar, Mohammad (författare): Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU)

Durrenfeld, Philipp (författare): Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU)

Slavin, Andrei (författare)

Åkerman, Johan (författare): Gothenburg University,Göteborgs universitet,KTH,Materialfysik, MF,University of Gothenburg, Sweden,Institutionen för fysik (GU),Department of Physics (GU)

Dumas, Randy K. (författare): Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU)

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Relaterad länk:: https://urn.kb.se/re...; visa fler...; https://doi.org/10.1...; https://gup.ub.gu.se...; visa färre...

Abstract Ämnesord

Stäng

Spin pumping at a boundary between a yttrium-iron garnet (YIG) film and a thin platinum (Pt) layer is studied under conditions in which a magnetostatic surface spin wave (MSSW, or Damon-Eshbach mode) is excited in YIG by a narrow strip-line antenna. It is shown that the voltage created by the inverse spin-Hall effect (ISHE) in Pt is strongly dependent on the wavevector of the excited MSSW. For YIG film thicknesses of 41 and 0.9 mu m, the maximum ISHE voltage corresponds to the maximum of efficiently excited MSSW wavevectors and does not coincide with the maximum of absorbed microwave power. For a thinner (0.175 mu m) YIG film, the maximum of the ISHE voltage moves closer to the ferromagnetic resonance and almost coincides with the region of the maximum microwave absorption. We show that the effect is related to the change in the thickness profile and the wavenumber spectrum of the excited MSSW taking place when the YIG film thickness is increased.

NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)

Av författaren/redakt...: Balinsky, Michae ...; Ranjbar, Mojtaba; Haidar, Mohammad; Durrenfeld, Phil ...; Khartsev, Sergiy; Slavin, Andrei; visa fler...; Åkerman, Johan; Dumas, Randy K.; visa färre...

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