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Granular superconductivity and charge/orbital order in YBa 2 Cu 3 O 7 /manganite trilayers

  • Khmaladze, Jarji Department of Physics and Fribourg Center for Nanomaterials, University of Fribourg, Switzerland
  • Sarkar, Subhrangsu Department of Physics and Fribourg Center for Nanomaterials, University of Fribourg, Switzerland
  • Soulier, Mathias Department of Physics and Fribourg Center for Nanomaterials, University of Fribourg, Switzerland
  • Lyzwa, Fryderyk Department of Physics and Fribourg Center for Nanomaterials, University of Fribourg, Switzerland
  • Prada, R. de Andres Department of Physics and Fribourg Center for Nanomaterials, University of Fribourg, Switzerland
  • Perret, Edith Department of Physics and Fribourg Center for Nanomaterials, University of Fribourg, Switzerland - Laboratory for Advanced Fibers, Empa, Swiss Federal Laboratories for Materials Science and Technology, St. Gallen, Switzerland
  • Mallett, Benjamin P. P. The MacDiarmid Institute and the Dodd Walls Centre for Photonic and Quantum Technologies, Photon Factory, University of Auckland, New Zealand
  • Minola, M. Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany
  • Keimer, B. Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany
  • Bernhard, Christian Department of Physics and Fribourg Center for Nanomaterials, University of Fribourg, Switzerland
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    01.08.2019
Published in:
  • Physical Review Materials. - 2019, vol. 3, no. 8, p. 084801
English We studied how the electronic, superconducting, and magnetic properties of YBa2Cu3O7/Nd1−x(Ca1−ySry )xMnO3 multilayers depend on the tolerance factor and the hole doping of the manganite. In particular, we investigated the granular superconducting state and the related magnetic-field-driven insulator-to- superconductor transition that was previously discovered in corresponding multilayers with Pr0.5La0.2Ca0.3MnO3 [B. P. P. Mallett et al., Phys. Rev. B 94, 180503(R) (2016)]. We found that this granular uperconducting state occurs only when the manganite layer is in a charge/orbital ordered and CE-type antiferromagnetic state (Mn-CO/OO). The coupling mechanism underlying this intriguing proximity effect seems to involve the domain boundaries of the Mn-CO/OO and/or the charge disordered regions of the manganite layer that become more numerous as the hole doping is reduced below x = 0.5.
Faculty
Faculté des sciences et de médecine
Department
Département de Physique
Language
  • English
Classification
Physics
License
License undefined
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Persistent URL
https://folia.unifr.ch/unifr/documents/308043
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