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Discrete Layer-by-Layer Magnetic Switching in Fe/MgO(001) Superlattices

Moubah, Reda (author)
Uppsala universitet,Materialfysik,Univ Hassan II Casablanca, Fac Sci Ain Chock, LPMMAT, Post Box 5366 Maarif, Casablanca, Morocco.,Uppsala University. Sweden
Magnus, Fridrik (author)
Uppsala universitet,Materialfysik,Univ Iceland, Inst Sci, Dunhaga 3, IS-107 Reykjavik, Iceland.,Uppsala University, Sweden
Warnatz, Tobias (author)
Uppsala universitet,Materialfysik,Uppsala University, Sweden
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Pálsson, Gunnar Karl (author)
Uppsala universitet,Materialfysik,Uppsala University, Sweden
Kapaklis, Vassilios (author)
Uppsala universitet,Materialfysik,Uppsala University, Sweden
Ukleev, V. (author)
Uppsala universitet,Materialfysik,BP Konstantinov Petersburg Nucl Phys Inst, Kurchatov Inst, Natl Res Ctr, Gatchina 188300, Russia.
Devishvili, Anton (author)
Uppsala universitet,Materialfysik,Uppsala University, Sweden
Palisaitis, Justinas (author)
Linköpings universitet,Tunnfilmsfysik,Tekniska högskolan
Persson, Per O. A. (author)
Linköpings universitet,Tunnfilmsfysik,Tekniska högskolan
Hjörvarsson, Björgvin (author)
Uppsala universitet,Materialfysik,Uppsala University, Sweden
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 (creator_code:org_t)
American physical society, 2016
2016
English.
In: Physical Review Applied. - : American physical society. - 2331-7019. ; 5:4
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • We report on a discrete layer-by-layer magnetic switching in Fe/MgO superlattices driven by an antiferromagnetic interlayer exchange coupling. The strong interlayer coupling is mediated by tunneling through MgO layers with thicknesses up to at least 1.8 nm, and the coupling strength varies with MgO thickness. Furthermore, the competition between the interlayer coupling and magnetocrystalline anisotropy stabilizes both 90 degrees and 180 degrees periodic alignment of adjacent layers throughout the entire superlattice. The tunable layer-by-layer switching, coupled with the giant tunneling magnetoresistance of Fe/MgO/Fe junctions, is an appealing combination for three-dimensional spintronic memories and logic devices.

Subject headings

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

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