Regensburg 2016 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 19: Superconductivity: Poster Session
TT 19.31: Poster
Montag, 7. März 2016, 15:00–18:00, Poster D
Superconducting Spin-Triplet-MRAM with Infinite Magnetoresistance Ratio — •Daniel Lenk1, Roman Morari1,2,3, Vladimir I. Zdravkov1,2,4, Aladin Ullrich1, Günter Obermeier1, Claus Müller1, Anatoli S. Sidorenko2, Hans-Albrecht Krug von Nidda1, Siegfried Horn1, Lenar R. Tagirov1,3, and Reinhard Tidecks1 — 1Institut für Physik, Universität Augsburg, D-86159 Augsburg, Germany — 2D. Ghitsu Institute of Electronic Engineering and Nanotechnologies ASM, Academiei Str. 3/3, MD2028 Kishinev, Moldova — 3Solid State Physics Department, Kazan Federal University, 420008 Kazan, Russia — 4Present Address: Institute of Applied Physics and Interdisciplinary Nanoscience Center, Universität Hamburg, Jungiusstraße 9A, D-20355 Hamburg, Germany
We fabricated a nanolayered hybrid superconductor-ferromagnet spin-valve structure, i.e. the superconducting transition temperature of this structure depends on its magnetic history. The observed spin-valve effect is based on the generation of the long range odd in frequency triplet component, arising from a non-collinear relative orientation of the constituent ferromagnetic layers. We investigated the effect both as a function of the sweep amplitude of the magnetic field, determining the magnetic history, and the applied transport current. Moreover, we demonstrate the possibility of switching the system from the normal o the superconducting state by applying field pulses, yielding an infinite magnetoresistance ratio.