Memory effect and triplet pairing generation in the superconducting exchange biased Co/CoOx/Cu41Ni59/Nb/Cu 41Ni59 layered heterostructure
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ZDRAVKOV, Vladimir, LENK, D., MORARI, Roman, ULLRICH, Aladin, OBERMEIER, Guenter, MULLER, Claus, KRUG VON NIDDA, Hans Albrecht, SIDORENKO, Anatolie, HÖRN, Siegfried, TIDECKS, Reinhard, TAGIROV, Lenar. Memory effect and triplet pairing generation in the superconducting exchange biased Co/CoOx/Cu41Ni59/Nb/Cu 41Ni59 layered heterostructure. In: Applied Physics Letters, 2013, vol. 103, pp. 1-14. ISSN 0003-6951. DOI: https://doi.org/10.1063/1.4818266
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Applied Physics Letters
Volumul 103 / 2013 / ISSN 0003-6951

Memory effect and triplet pairing generation in the superconducting exchange biased Co/CoOx/Cu41Ni59/Nb/Cu 41Ni59 layered heterostructure

DOI:https://doi.org/10.1063/1.4818266

Pag. 1-14

Zdravkov Vladimir12, Lenk D.1, Morari Roman2, Ullrich Aladin1, Obermeier Guenter1, Muller Claus1, Krug Von Nidda Hans Albrecht1, Sidorenko Anatolie2, Hörn Siegfried1, Tidecks Reinhard1, Tagirov Lenar13
 
1 Institut für Physik, Universität Augsburg,
2 Institute of the Electronic Engineering and Nanotechnologies "D. Ghitu" of the Academy of Sciences of Moldova,
3 Kazan Federal University
 
 
Disponibil în IBN: 16 iunie 2023


Rezumat

We fabricated a nanolayered hybrid superconductor-ferromagnet spin-valve structure, the resistive state of which depends on the preceding magnetic field polarity. The effect is based on a strong exchange bias (about -2 kOe) on a diluted ferromagnetic copper-nickel alloy and generation of a long range odd in frequency triplet pairing component. The difference of high and low resistance states at zero magnetic field is 90% of the normal state resistance for a transport current of 250 μA and still around 42% for 10 μA. Both logic states of the structure do not require biasing fields or currents in the idle mode.

Cuvinte-cheie
Ferromagnetic materials, ferromagnetism, Heterojunctions, Magnetic fields, Nickel alloys, Superconducting materials, superconductivity