Spin-Triplet Superconducting Current in Metal-Oxide Heterostructures With Composite Ferromagnetic Interlayer

Superconducting heterostructures fabricated from oxide superconductor YBa 2 Cu 2 O 7-δ and a composite ferromagnet La 0.7 Sr 0.3 MnO 3 /SrRuO 3 interlayer and Au/Nb counter electrode were studied experimentally. Superconducting current was observed at magnetic field H raised up to 2000 Oe, which is...

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Veröffentlicht in:	IEEE transactions on applied superconductivity 2016-04, Vol.26 (3), p.1-4
Hauptverfasser:	Constantinian, Karen, Ovsyannikov, Gennady, Sheyerman, Alexander, Kislinskii, Yulii, Shadrin, Anton, Kalaboukhov, Alexei, Mustafa, Luqman, Khaydukov, Yurii, Winkler, Dag
Format:	Artikel
Sprache:	eng
Schlagworte:	Composite ferromagnet Critical current density (superconductivity) current-phase relations Harmonic analysis Integrated circuits Josephson junctions long-range proximity effect Magnetic fields Magnetism Magnetization spin-triplet pairing superconducting heterostructure Superconducting microwave devices Superconductors
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Zusammenfassung:	Superconducting heterostructures fabricated from oxide superconductor YBa 2 Cu 2 O 7-δ and a composite ferromagnet La 0.7 Sr 0.3 MnO 3 /SrRuO 3 interlayer and Au/Nb counter electrode were studied experimentally. Superconducting current was observed at magnetic field H raised up to 2000 Oe, which is greater than saturation magnetic field of manganite La 0.7 Sr 0.3 MnO 3 (of order 100 Oe) and greater by a few orders than the value of magnetic field corresponding to penetration of one magnetic flux quantum. Microwave measurements of integer and half-integer Shapiro steps in conditions when relatively low external magnetic field H
ISSN:	1051-8223 1558-2515 1558-2515
DOI:	10.1109/TASC.2016.2522300