Suppressed magnetization in La$_{0.7}$Ca$_{0.3}$MnO$_3$/YBa$_2$Cu$_3$O$_{7-δ}$ superlattices

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dc.creatorHoffmann, A.
dc.creatorVelthuis, S. G. E. te
dc.creatorSefroui, Z.
dc.creatorSantamaria, J.
dc.creatorFitzsimmons, M. R.
dc.creatorPark, S.
dc.creatorVarela, M.
dc.date2005-07-05
dc.date2005-09-06
dc.date.accessioned2026-07-07T06:22:38Z
dc.date.available2026-07-07T06:22:38Z
dc.descriptionWe studied the magnetic properties of La$_{0.7}$Ca$_{0.3}$MnO$_3$ / YBa$_2$Cu$_3$O$_{7-δ}$ superlattices. Magnetometry showed that with increasing YBa$_2$Cu$_3$O$_{7-δ}$ layer thickness the saturation magnetization per La$_{0.7}$Ca$_{0.3}$MnO$_3$ layer decreases. From polarized neutron reflectometry we determined that this magnetization reduction is due to an inhomogenous magnetization depth profile arising from the suppression of magnetization near the La$_{0.7}$Ca$_{0.3}$MnO$_3$ / YBa$_2$Cu$_3$O$_{7-δ}$ interface. Electron energy loss spectroscopy indicates an increased 3d band occupation of the Mn atoms in the La$_{0.7}$Ca$_{0.3}$MnO$_3$ layers at the interface. Thus, the suppression of ferromagnetic order at the La$_{0.7}$Ca$_{0.3}$MnO$_3$ / YBa$_2$Cu$_3$O$_{7-δ}$ interface is most likely due to charge transfer between the two materials.
dc.description4 pages, 4 figures, submitted to Phys. Rev. B
dc.identifierhttps://arxiv.org/abs/cond-mat/0507123
dc.identifierhttp://arxiv.org/abs/cond-mat/0507123
dc.identifierPhys. Rev. B vol. 72, 140407(R) (2005)
dc.identifierdoi:10.1103/PhysRevB.72.140407
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/95966
dc.subjectMaterials Science
dc.subjectStrongly Correlated Electrons
dc.titleSuppressed magnetization in La$_{0.7}$Ca$_{0.3}$MnO$_3$/YBa$_2$Cu$_3$O$_{7-δ}$ superlattices
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