Full-switching FSF-type superconducting spin-triplet magnetic random access memory element
D. Lenk, R. Morari, V. I. Zdravkov, A. Ullrich, Yu. Khaydukov, G. Obermeier, C. Müller, A. S. Sidorenko, H.-A. Krug von Nidda, S. Horn, L. R. Tagirov, R. Tidecks
DOI 10.1103/PhysRevB.96.184521 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
In the present work a superconducting Co/CoOx/Cu41Ni59/Nb/Cu41Ni59 nanoscale thin film heterostructure is investigated, which exhibits a superconducting transition temperature, Tc, depending on the history of magnetic field applied parallel to the film plane. In more detail, around zero applied field, Tc is lower when the field is changed from negative to positive polarity (with respect to the cooling field), compared to the opposite case. We interpret this finding as the result of the generation of the odd-in-frequency triplet component of superconductivity arising at noncollinear orientation of the magnetizations in the Cu41Ni59 layer adjacent to the CoOx layer. This interpretation is supported by superconducting quantum interference device magnetometry, which revealed a correlation between details of the magnetic structure and the observed superconducting spin-valve effects. Readout of information is possible at zero applied field and, thus, no permanent field is required to stabilize both states. Consequently, this system represents a superconducting magnetic random access memory element for superconducting electronics. By applying increased transport currents, the system can be driven to the full switching mode between the completely superconducting and the normal state.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Nb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Memory Cell for High-Density Arrays Based on a Multiterminal Superconducting-Ferromagnetic Device
similarity 0.92I. P. Nevirkovets & O. A. Mukhanov
Source status unknown — claims are unverified
Low-Field Superconducting Spin Switch Based on a Superconductor /Ferromagnet Multilayer
similarity 0.91L. R. Tagirov
Source status unknown — claims are unverified
Flux-coupled tunable superconducting resonator
similarity 0.90Juliang Li et al.
Source status unknown — claims are unverified
Controlling the superconducting transition by spin-orbit coupling
similarity 0.90N. Banerjee et al.
Source status unknown — claims are unverified
Mesoscopic superconducting memory based on bistable magnetic textures
similarity 0.90R. Fermin et al.
Source status unknown — claims are unverified
Intrinsically frustrated superconducting array of superconductor-ferromagnet-superconductor π junctions
similarity 0.90V. V. Ryazanov et al.
Source status unknown — claims are unverified