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TT: Fachverband Tiefe Temperaturen

TT 55: Poster Session: Superconductivity 2

TT 55.3: Poster

Mittwoch, 22. März 2017, 15:00–19:00, P2-OG3

Structural and Magnetic Properties of a Superconducting Spin-Triplet-MRAM Element — •Daniel Lenk¹, Vladimir I. Zdravkov^1,2, Roman Morari², Zakir Seidov³, Yury Khaydukov⁴, Aladin Ullrich¹, Günter Obermeier¹, Claus Müller¹, Anatoli S. Sidorenko², Hans-Albrecht Krug von Nidda¹, Siegfried Horn¹, Lenar R. Tagirov^1,5, and Reinhard Tidecks¹ — ¹Institut für Physik, Universität Augsburg, D-86158 Augsburg, Germany — ²D. Ghitsu Institute of Electronic Engineering and Nanotechnologies ASM, MD2028 Kishinev, Moldova — ³Institute of Physics, Azerbaijan National Academy of Sciences, AZ-1143 Baku, Azerbaijan — ⁴Max-Planck-Institut für Festkörperforschung, D-70569 Stuttgart, Germany — ⁵E.K. Zavoisky Physical-Technical Institute of RAS, 420029 Kazan, Russia

We investigated a Co/CoO_x/Cu₄₁Ni₅₉/Nb/Cu₄₁Ni₅₉ nanolayered heterostructure, which shows a superconducting transition temperature depending on the magnetic history of the sample. The observed magnetic random access memory (MRAM) element functionality arises from the triplet spin-valve effect, caused by the long-range odd-in-frequency triplet component of superconductivity, obtained at non-collinear relative orientation of ferromagnetic layers. In the present study, we investigate the structural and magnetic properties applying cross-sectional TEM analysis, SQUID magnetometry, FMR spectroscopy and Polarized Neutron Reflectometry (PNR).