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  Satapathy, D.K.; Uribe-Laverde, M.A.; Marozau, I.; Malik, V.K.; Das, S.; Wagner, Th.; Marcelot, C.; Stahn, J.; Brück, S.; Rühm, A.; Macke, S.; Tietze, T.; Goering, E.; Frano, A.; Kim, J.-H.; Wu, M.; Benckiser, E.; Keimer, B.; Devishvili, A.; Toperverg, B.P.; Merz, M.; Nagel, P.; Schuppler, S.; Bernhard, C.: Magnetic Proximity Effect in YBa₂Cu₃O₇/La_2/3Ca₁/₃MnO₃ and YBa₂Cu₃O₇/LaMnO_3+delta Superlattices. Physical Review Letters 108 (2012), p. 197201/1-5

10.1103/PhysRevLett.108.197201
Open Access Version

Abstract:
Using neutron reflectometry and resonant x-ray techniques we studied the magnetic proximity effect (MPE) in superlattices composed of superconducting YBa2Cu3O7 and ferromagnetic-metallic La0.67Ca0.33MnO3 or ferromagnetic-insulating LaMnO3+δ. We find that the MPE strongly depends on the electronic state of the manganite layers, being pronounced for the ferromagnetic-metallic La0.67Ca0.33MnO3 and almost absent for ferromagnetic-insulating LaMnO3+δ. We also detail the change of the magnetic depth profile due to the MPE and provide evidence for its intrinsic nature.