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

Khmaladze, Jarji; Sarkar, Subhrangsu; Soulier, Mathias; Lyzwa, Fryderyk; Prada, R. de Andres; Perret, Edith; Mallett, Benjamin P. P.; Minola, M.; Keimer, B.; Bernhard, Christian

doi:10.1103/PhysRevMaterials.3.084801

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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

01.08.2019

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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

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Département de Physique

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