Induced spin-polarization of EuS at room temperature in Ni/EuS multilayers

Poulopoulos, P. (author)

Goschew, A. (author)

Delimitis, A. (author)

Wilhelm, F. (author)

Rogalev, A. (author)

Straub, A. (author)

Fumagalli, P. (author)

(creator_code:org_t)

AIP Publishing, 2014
2014
English.
In: Applied Physics Letters. - : AIP Publishing. - 0003-6951 .- 1077-3118. ; 104:11, s. 112411-

Related links:: https://urn.kb.se/re...; show more...; https://doi.org/10.1...; show less...

Abstract Subject headings

Ni/EuS multilayers with excellent multilayer sequencing are deposited via e-beam evaporation on the native oxide of Si(100) wafers at 4 x 10(-9) millibars. The samples have very small surface and interface roughness and show sharp interfaces. Ni layers are nanocrystalline 4-8 nm thick and EuS layers are 2-4 nm thick and are either amorphous or nanocrystalline. Unlike for Co/EuS multilayers, all Eu ions are in divalent (ferromagnetic) state. We show a direct antiferromagnetic coupling between EuS and Ni layers. At room temperature, the EuS layers are spin-polarized due to the proximity of Ni. Therefore, Ni/EuS is a candidate for room-temperature spintronics applications. (C) 2014 AIP Publishing LLC.

By the author/editor: Poulopoulos, P.; Goschew, A.; Kapaklis, Vassil ...; Wolff, Max; Delimitis, A.; Wilhelm, F.; show more...; Rogalev, A.; Pappas, Spyridon ...; Straub, A.; Fumagalli, P.; show less...

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