Effect of Interface Induced Exchange Fields on Cuprate-Manganite Spin Switches

Abstract

We examine the anomalous inverse spin switch behavior in La${}_{0.7}$Ca${}_{0.3}$MnO${}_3$ (LCMO)/YBa${}_2$Cu${}_3$O${}_{7-\delta }$ (YBCO)/LCMO trilayers by combined transport studies and polarized neutron reflectometry. Measuring magnetization profiles and magnetoresistance in an in-plane rotating magnetic field, we prove that, contrary to many accepted theoretical scenarios, the relative orientation between the two LCMO's magnetizations is not sufficient to determine the magnetoresistance. Rather the field dependence of magnetoresistance is explained by the interplay between the applied magnetic field and the (exponential tail of the) induced exchange field in YBCO, the latter originating from the electronic reconstruction at the LCMO/YBCO interfaces.

arXiv commentTotal 7 pages,with Supplemental Material. Accepted for publication in Physical Review Letters

References in corpus (10)

• Magnetic effects at the interface between nonmagnetic oxides
• Ferromagnetic/superconducting proximity effect in La0.7Ca0.3MnO3 / YBa2Cu3O7 superlattices
• Spin-Imbalance and Magnetoresistance in Ferromagnet/Superconductor/Ferromagnet Double Tunnel Junctions
• Magnetic Proximity Effect in Perovskite Superconductor/Ferromagnet Multilayers
• Suppressed magnetization in La${}_{0.7}$Ca${}_{0.3}$MnO${}_3$/YBa${}_2$Cu${}_3$O${}_{7-\delta }$ superlattices
• Angular Dependence of the Superconducting Transition Temperature in Ferromagnet-Superconductor-Ferromagnet Trilayers
• Unconventional proximity effect and inverse spin-switch behavior in a model manganite-cuprate-manganite trilayer system
• YBa${}_2$Cu${}_3$O${}_7$/La${}_{0.7}$Ca${}_{0.3}$MnO${}_3$ bilayers: Interface coupling and electric transport properties
• In search for the superconducting spin-switch: Magnetization induced resistance switching effects in La${}_{0.67}$Sr${}_{0.33}$MnO${}_3$/YBa${}_2$Cu${}_3$O${}_{7-\delta }$ bi- and trilayers
• Synergy of exchange bias with superconductivity in ferromagnetic-superconducting layered hybrids: the influence of in-plane and out-of-plane magnetic order on superconductivity

Cited by in corpus (11)

• Angular dependence of superconductivity in superconductor / spin valve heterostructures
• Competition between covalent bonding and charge transfer at complex-oxide interfaces
• Emergent Spin-Filter at the interface between Ferromagnetic and Insulating Layered Oxides
• Interfacial Magnetism in Complex Oxide Heterostructures Probed by Neutrons and X-rays
• Granular superconductivity and magnetic-field-driven recovery of macroscopic coherence in a cuprate/manganite multilayer
• Superconductor to Mott insulator transition in YBa${}_2$Cu${}_3$O${}_7$/LaCaMnO${}_3$ heterostructures
• Crossover between standard and inverse spin-valve effect in atomically thin superconductor/half-metal structures
• Proximity driven commensurate pinning in YBa2Cu3O7 through all-oxide magnetic nanostructures
• Exchange Field-Mediated Magnetoresistance in the Correlated Insulator Phase of Be Films
• Structural and electronic properties of epitaxial YBaCuO/LaCaMnO bilayers grown on SrTiO${}_3$ (110) substrates
• Crossover from magnetostatic to exchange coupling in La0.67Ca0.33MnO3/YBa2Cu3O7/La0.67Ca0.33MnO3 heterostructures