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Triplet superconductivity in oxide ferromagnetic interlayer of mesa-structure

Gennady A. Ovsyannikov (Institutionen för mikroteknologi och nanovetenskap, Kvantkomponentfysik) ; K.Y. Constantinian ; A.E. Sheerman ; A. V. Shadrin (Institutionen för mikroteknologi och nanovetenskap) ; Y.V. Kislinski ; Y.N. Khaydukov ; L. Mustafa ; Alexei Kalaboukhov (Institutionen för mikroteknologi och nanovetenskap, Kvantkomponentfysik) ; Dag Winkler (Institutionen för mikroteknologi och nanovetenskap, Kvantkomponentfysik)
Journal of Physics: Conference Series. 2014 International Conference on Strongly Correlated Electron Systems, SCES 2014; University of GrenobleGrenoble; France; 7 July 2014 through 14 July (1742-6588). Vol. 592 (2014), 1, p. Art. no. 012136.
[Konferensbidrag, refereegranskat]

We present experimental data on Nb-Au/La0.7Sr0.3MnO3/SrRuO3/YBa2Cu3O7-δ mesa- structure with in plane linear size 10÷50 μm. The mesa-structures were patterned from the epitaxial heterostructures fabricated by pulsed laser ablation and magnetron sputtering. Superconducting critical current was observed for mesa-structures with the interlayer thicknesses up to 50 nm. In the mesa-structures with just one, either La0.7Sr0.3MnO3 or SrRuO3 interlayer with a thickness larger than 10 nm no superconducting current was observed. The registered superconducting current for the mesa-structures with a thinner interlayer is attributed to pinholes. Obtained results are discussed in terms of superconducting long-range triplet generation at interfaces of superconductor and a composite ferromagnet consisting of ferromagnetic materials with non-collinear magnetization.

Denna post skapades 2015-04-29. Senast ändrad 2017-09-14.
CPL Pubid: 215994


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