2026-06-27T11:25:22Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/971932025-09-02T16:46:30Zcom_20.500.14352_14col_20.500.14352_15

Symmetrical interfacial reconstruction and magnetism in La0.7Ca0.3MnO3/YBa2Cu3O7/La0.7Ca0.3MnO3 heterostructures Visani, Cristina Tornos Castillo, Javier Nemes, Norbert Marcel Rocci, Mirko León Yebra, Carlos Santamaría Sánchez-Barriga, Jacobo Pennycook, Stephen We have analyzed the interface structure and composition of La0.7Ca0.3MnO3/YBa2Cu3O7/La0.7Ca0.3MnO3 trilayers by combined polarized neutron reflectometry, aberration-corrected microscopy, and atomic column resolution electron-energy-loss spectroscopy and x-ray absorption with polarization analysis. We find the same stacking sequence at both top and bottom cuprate interfaces. X-ray magnetic circular dichroism experiments show that both cuprate interfaces are magnetic with a magnetic moment induced in Cu atoms as expected from symmetric Mn-O-Cu superexchange paths. These results supply a solid footing for the applicability of recent theories explaining the interplay between magnetism and superconductivity in this system in terms of the induced Cu spin polarization at both interfaces [J. Salafranca and S. Okamoto, Phys. Rev. Lett. 105, 256804 (2010)]. 2024-01-31T13:17:59Z 2024-01-31T13:17:59Z 2024-01-31T13:17:59Z 2011 journal article https://hdl.handle.net/20.500.14352/97193 2469-9950 10.1103/PhysRevB.84.060405 2469-9969 eng info:eu-repo/grantAgreement/MAT2008-06517 info:eu-repo/grantAgreement/MICINN/CSD2009-00013 info:eu-repo/grantAgreement/CAM S2009-MAT1756 info:eu-repo/grantAgreement/EC/FP7/239739/EU info:eu-repo/grantAgreement/DE-AC02-06CH11357 info:eu-repo/grantAgreement/DE-AC52-06NA25396 C. Visani, J. Tornos, N. M. Nemes, M. Rocci, C. Leon, J. Santamaria, S. G. E. te Velthuis, Yaohua Liu, A. Hoffmann, J. W. Freeland, M. Garcia-Hernandez, M. R. Fitzsimmons, B. J. Kirby, M. Varela, and S. J. Pennycook Phys. Rev. B 84, 060405(R) – (2011) restricted access American Physical Society