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

Författare och institution:
Michael Balinsky (Institutionen för fysik (GU)); Mojtaba Ranjbar (Institutionen för fysik (GU)); Mohammad Haidar (Institutionen för fysik (GU)); Philipp Dürrenfeld (Institutionen för fysik (GU)); Serigy Khartsev (-); Anderi Slavin (-); Johan Åkerman (Institutionen för fysik (GU)); Randy K. Dumas (Institutionen för fysik (GU))
Publicerad i:
IEEE Magnetics Letters, 6 s. 1-4
ISSN:
1949-307X
Publikationstyp:
Artikel, refereegranskad vetenskaplig
Publiceringsår:
2015
Språk:
engelska
Fulltextlänk:
Sammanfattning (abstract):
Spin pumping at a boundary between a yttriumiron garnet (YIG) film and a thin platinum (Pt) layer is studied under conditions in which a magnetostatic surface spin wave (MSSW, or DamonEshbach 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 0.9m, 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 (0.175m) 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.
Ämne (baseras på Högskoleverkets indelning av forskningsämnen):
NATURVETENSKAP ->
Fysik ->
Den kondenserade materiens fysik ->
Magnetism
Nyckelord:
Spin electronics, inverse spin-Hall effect, spin pumping, magnetostatic surface spin waves.
Projekt:
Magnonics Using Spin Torque, spin caloritronics, And Nanoplasmonic engineerinG (MUSTANG) (EC/FP7/307144)
Postens nummer:
235209
Posten skapad:
2016-04-26 11:35
Posten ändrad:
2016-07-05 10:56

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