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arXiv · 1111.5772

Magnetic proximity effect in $\mathbf{YBa_2Cu_3O_7/La_{2/3}Ca_{1/3}MnO_3}$ and $\mathbf{YBa_2Cu_3O_7/LaMnO_{3+\delta}}$ superlattices

D. K. Satapathy·M. A. Uribe-Laverde·I. Marozau·V. K. Malik·S. Das·Th. Wagner·C. Marcelot·J. Stahn·S. Brück·A. Rühm·S. Macke·T. Tietze·E. Goering·A. Frañó·J. -H. Kim·M. Wu·E. Benckiser·B. Keimer·A. Devishvili·B. P. Toperverg·M. Merz·P. Nagel·S. Schuppler·C. Bernhard
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Abstract

Using neutron reflectometry and resonant x-ray techniques we studied the magnetic proximity effect (MPE) in superlattices composed of superconducting YBa$_2$Cu$_3$O$_7$ (YBCO) and ferromagnetic-metallic (FM-M) La$_{0.67}$Ca$_{0.33}$MnO$_{3}$ (LCMO) or ferromagnetic-insulating (FM-I) LaMnO$_{3+\delta}$ (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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D. K. Satapathy, M. A. Uribe-Laverde, I. Marozau, V. K. Malik, S. Das, Th. Wagner, C. Marcelot, J. Stahn, S. Brück, A. Rühm, S. Macke, T. Tietze, E. Goering, A. Frañó, J. -H. Kim, M. Wu, E. Benckiser, B. Keimer, A. Devishvili, B. P. Toperverg, M. Merz, P. Nagel, S. Schuppler, C. Bernhard. 2011-11-24. Magnetic proximity effect in $\mathbf{YBa_2Cu_3O_7/La_{2/3}Ca_{1/3}MnO_3}$ and $\mathbf{YBa_2Cu_3O_7/LaMnO_{3+\delta}}$ superlattices. https://doi.org/10.1103/physrevlett.108.197201

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