Magnetic proximity effect in YBa_2Cu_3O_7/La_{1-x}Ca_xMnO_3 superlattices

Details Magnetic proximity effect in YBa_2Cu_3O_7/La_{1-x}Ca_xMnO_3 superlattices Magnetic proximity effect in YBa_2Cu_3O_7/La_{1-x}Ca_xMnO_3 superlattices

2011-11-24

arxiv.org/abs/1111.5772v1

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 4 figures

Scientific paper

Using neutron reflectometry and resonant x-ray techniques we studied the magnetic proximity effect (MPE) in superlattices composed of superconducting YBa_2Cu_3O_7(YBCO) and ferromagnetic-metallic (FM-M) La0.67Ca0.33MnO3(LCMO) or ferromagnetic-insulating (FM-I) LaMnO3+\delta(LMO). We find that the MPE strongly depends on the electronic state of the manganite layers, being pronounced for the FM-M LCMO and almost absent for FM-I LMO. We also detail the change of the magnetic depth profile due to the MPE and provide evidence for its intrinsic nature.

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