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@INPROCEEDINGS{deOliveiraLima:1031782,
      author       = {de Oliveira Lima, Vitor Alexandre and Faley, Michael and
                      Bednarski-Meinke, Connie and Kentzinger, Emmanuel and
                      Brückel, Thomas},
      title        = {{A}nomalous magnetoresistance driven by interfacial
                      proximity insuperconductor/ferromagnet heterostructures},
      reportid     = {FZJ-2024-05809},
      year         = {2024},
      abstract     = {Proximity effects (PE) are emergent phenomena that occur at
                      the interfaces of appropriately designedsuperconductor
                      (SC)/ferromagnet (FM) thin films heterostructures. PE arise
                      due to the strong correlationand electronic competition in
                      the antagonist phase materials. PE have potential
                      applicationsin spin-triplet Josephson Junctions that involve
                      the manipulation of fluxons, such as superconductingQubits,
                      for quantum computing [1–3]. Several types of PE were
                      reported when consideringheterostructures based on
                      conventional SC and FM with either in-plane or perpendicular
                      magneticanisotropy (PMA). However, there are few
                      contributions regarding PE in heterostructures based onhigh
                      critical temperature (Tc) SC and FM with perpendicular
                      magnetic anisotropy. SrRuO3 (SRO) isa suitable FM candidate
                      due to its strong PMA with narrow domain walls, high
                      spin-orbit coupling,anomalous Hall and Berry effects, and
                      excellent lattice match with the high-Tc SC
                      YBa2Cu3O7−x(YBCO). We report magnetotransport results of
                      epitaxial YBCO/SRO and SRO/YBCO heterostructuresprepared on
                      low miscut SrTiO3 (001) single crystals by high oxygen
                      pressure sputtering. Wehave observed intriguing proximity
                      effects characterized by (i) a reduction in the SC Tc and
                      (ii) aninversion of the magnetoresistance (MR) signal at the
                      superconductivity onset. We suggest that thechange in the MR
                      signal is related to the competition between the FM and SC
                      states within bothsamples. In addition, features in the MR
                      curves that may be attributed to weak localization
                      andantilocalization effects at the YBCO/SRO and SRO/YBCO
                      interfaces were observed. Such featurescould be correlated
                      to the high Ru deficiency in the SRO films and to a possible
                      orbital reconstructionat the interfaces, which will be
                      further investigated by synchrotron and neutron scattering
                      techniques.This study enhances our understanding of the
                      intricate relationship between magnetism
                      andsuperconductivity in high-Tc SC/FM systems, illuminating
                      potential future materials for quantumelectronics.[1]
                      Sedlmayr, N., $\&$ Levchenko, A., Solid State
                      Communications, 327, 114221 (2021).[2] Dua, A., Malomed, B.,
                      Cheng, M., $\&$ Jiang, L., Physical Review B, 100, 144508
                      (2019).[3] Klenov, N. V., Kuznetsov, A. V., Soloviev, I. I.,
                      Bakurskiy, S. V., Denisenko, M. V., $\&$ Satanin, A. M.,Low
                      Temperature Physics, 43, 789-798 (2017).},
      month         = {Oct},
      date          = {2024-10-08},
      organization  = {JCNS Workshop 2024, Trends and
                       Perspectives in Neutron Scattering:
                       Functional Interfaces, Evangelische
                       Akademie Tutzing (Germany), 8 Oct 2024
                       - 11 Oct 2024},
      subtyp        = {Invited},
      cin          = {JCNS-2 / JARA-FIT / ER-C-1},
      cid          = {I:(DE-Juel1)JCNS-2-20110106 / $I:(DE-82)080009_20140620$ /
                      I:(DE-Juel1)ER-C-1-20170209},
      pnm          = {632 - Materials – Quantum, Complex and Functional
                      Materials (POF4-632)},
      pid          = {G:(DE-HGF)POF4-632},
      typ          = {PUB:(DE-HGF)24},
      url          = {https://juser.fz-juelich.de/record/1031782},
}