Journal article

Evidence for spin-triplet superconducting correlations in metal-oxide heterostructures with noncollinear magnetization

  • Khaydukov, Yu. N. Max-Planck Institute for Solid State Research, Stuttgart, Germany - Max Planck Society Outstation at FRM-II, Garching, Germany - Skobeltsyn Institute of Nuclear Physics, Moscow State University, Russia
  • Ovsyannikov, G. A. Kotel'nikov Institute of Radio Engineering and Electronics of Russian Academy of Sciences, Moscow, Russia - Chalmers University of Technology, Department of Microtechnology and Nanoscience, Gothenburg, Sweden
  • Sheyerman, A. E. Kotel'nikov Institute of Radio Engineering and Electronics of Russian Academy of Sciences, Moscow, Russia
  • Constantinian, K. Y. Kotel'nikov Institute of Radio Engineering and Electronics of Russian Academy of Sciences, Moscow, Russia
  • Mustafa, L. Max-Planck Institute for Solid State Research, Stuttgart, Germany
  • Keller, T. Max-Planck Institute for Solid State Research, Stuttgart, Germany - Max Planck Society Outstation at FRM-II, Garching, Germany
  • Uribe-Laverde, Miguel Angel University of Fribourg, Department of Physics, and Fribourg Centre for Nanomaterials, Switzerland
  • Kislinskii, Yu. V. Kotel'nikov Institute of Radio Engineering and Electronics of Russian Academy of Sciences, Moscow, Russia
  • Shadrin, A. V. Kotel'nikov Institute of Radio Engineering and Electronics of Russian Academy of Sciences, Moscow, Russia - Chalmers University of Technology, Department of Microtechnology and Nanoscience, Gothenburg, Sweden
  • Kalaboukhov, A. Skobeltsyn Institute of Nuclear Physics, Moscow State University, Russia - Chalmers University of Technology, Department of Microtechnology and Nanoscience, Gothenburg, Sweden
  • Keimer, B. Max-Planck Institute for Solid State Research, Stuttgart, Germany
  • Winkler, D. Chalmers University of Technology, Department of Microtechnology and Nanoscience, Gothenburg, Sweden
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    22.07.2014
Published in:
  • Physical Review B. - 2014, vol. 90, no. 3, p. 035130
English Heterostructures composed of ferromagnetic La0.7Sr0.3MnO3, ferromagnetic SrRuO3, and superconducting YBa2Cu3O6+x were studied experimentally. Structures of composition Au/La0.7Sr0.3MnO3/SrRuO3/YBa2Cu3O6+x were prepared by pulsed laser deposition, and their high quality was confirmed by x-ray diffraction and reflectometry. A noncollinear magnetic state of the heterostructures was revealed by means of superconducting quantum interference device magnetometry and polarized neutron reflectometry. We have further observed superconducting currents in mesa structures fabricated by deposition of a second superconducting Nb layer on top of the heterostructure, followed by patterning with photolithography and ion-beam etching. Josephson effects observed in these mesa structures can be explained by the penetration of a triplet component of the superconducting order parameter into the magnetic layers.
Faculty
Faculté des sciences
Department
Physique
Language
  • English
Classification
Physics
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https://folia.unifr.ch/unifr/documents/303729
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