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Triplet superconducting correlations in oxide heterostructures with a composite ferromagnetic interlayer

Gennady A. Ovsyannikov (Institutionen för mikroteknologi och nanovetenskap, Kvantkomponentfysik) ; A. E. Sheyerman ; A. V. Shadrin ; Y. V. Kislinskii ; K. Y. Constantinian ; Alexei Kalaboukhov (Institutionen för mikroteknologi och nanovetenskap, Kvantkomponentfysik)
Jetp Letters (0021-3640). Vol. 97 (2013), 3, p. 145-148.
[Artikel, refereegranskad vetenskaplig]

The superconducting current induced by the penetration of the long-range triplet component of superconducting correlations into a composite ferromagnetic interlayer has been detected in mesa-heterostructures based on oxide cuprate superconductors YBa2Cu3O7 - delta and Au/Nb bilayer films with the composite oxide interlayer that is made of ferromagnetic films of manganite La0.7Sr0.3MnO3 and ruthenate SrRuO3 and has a thickness much larger than the length of correlations determined by the exchange field. The deviation of the superconducting current in the mesa-heterostructure with the fraction of the second harmonic of 13% from a sinusoidal current-phase relation has been detected; this deviation can also be due to the generation of the triplet component of superconducting correlations in the ferromagnet.

Nyckelord: thin-films



Denna post skapades 2013-05-27. Senast ändrad 2016-07-13.
CPL Pubid: 177426

 

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Institutioner (Chalmers)

Institutionen för mikroteknologi och nanovetenskap, Kvantkomponentfysik

Ämnesområden

Fysik

Chalmers infrastruktur