Triplet superconductivity in oxide ferromagnetic interlayer of mesa-structure
Paper in proceedings, 2014

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.

Author

Gennady Ovsyannikov

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

K. Y. Constantinian

National Research University of Electronic Technology (MIET)

A.E. Sheerman

National Research University of Electronic Technology (MIET)

A. V. Shadrin

Chalmers, Microtechnology and Nanoscience (MC2)

Y.V. Kislinski

National Research University of Electronic Technology (MIET)

Y. N. Khaydukov

Max Planck Institute

L. Mustafa

Max Planck Institute

Alexei Kalaboukhov

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Dag Winkler

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Journal of Physics: Conference Series

17426588 (ISSN) 17426596 (eISSN)

Vol. 592 1 Art. no. 012136- 012136

Subject Categories

Condensed Matter Physics

DOI

10.1088/1742-6596/592/1/012136

More information

Latest update

2/21/2018