Unconventional proximity effect and inverse spin-switch behavior in a model manganite-cuprate-manganite trilayer system

Abstract

The proximity effect in a model manganite-cuprate system is investigated theoretically. We consider a situation in which spin-polarized electrons in manganite layers antiferromagnetically couple with electrons in cuprate layers as observed experimentally. The effect of the interfacial magnetic coupling is found to be much stronger than the injection of spin-polarized electrons into the cuprate region. As a result, the superconducting transition temperature depends on the thickness of the cuprate layer significantly. Since the magnetic coupling creates {\em negative} spin polarization, an applied magnetic field and the negative polarization compete resulting in the inverse spin-switch behavior where the superconducting transition temperature is increased by applying a magnetic field.

Accepted in PRL

References in corpus (6)

• Proximity effects in superconductor-ferromagnet heterostructures
• Ferromagnetic/superconducting proximity effect in La0.7Ca0.3MnO3 / YBa2Cu3O7 superlattices
• Inverse spin switch effects in Ferromagnet / Superconductor hybrids with strong ferromagnets
• Electron Doping of Cuprates via Interfaces with Manganites
• Magnetic interaction at an interface between manganite and other transition metal oxides
• Proximity effect in atomic-scaled hybrid superconductor/ferromagnet structures: crucial role of electron spectra

Cited by in corpus (15)

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• Emergent Spin-Filter at the interface between Ferromagnetic and Insulating Layered Oxides
• Depth profile of the ferromagnetic order in a YBa${}_2$Cu${}_3$O${}_7$ / La${}_{2/3}$Ca${}_{1/3}$MnO${}_3$ superlattice on a LSAT substrate: a polarized neutron reflectometry study
• Spin-flip scattering and critical currents in ballistic half-metallic d-wave Josephson junctions
• Effect of Interface Induced Exchange Fields on Cuprate-Manganite Spin Switches
• Hysteretic magnetic pinning and reversible resistance switching in High-Tc superconductor/ferromagnet multilayers
• X-ray absorption study of the ferromagnetic Cu moment at the $\mathbf{YB}{\mathbf{a}}_2\mathbf{C}{\mathbf{u}}_3{\mathbf{O}}_7/\mathbf{L}{\mathbf{a}}_{2/3}\mathbf{C}{\mathbf{a}}_{1/3}\mathbf{Mn}{\mathbf{O}}_3$ interface and the variation of its exchange interaction with the Mn moment
• Interfacial Magnetism in Complex Oxide Heterostructures Probed by Neutrons and X-rays
• X-ray absorption spectroscopy study of the electronic and magnetic proximity effects in YBa${}_2$Cu${}_3$O${}_7$/La${}_{2/3}$Ca${}_{1/3}$MnO${}_3$ and La${}_{2-x}$Sr${}_x$CuO${}_4$/La${}_{2/3}$Ca${}_{1/3}$MnO${}_3$ multilayers
• Selective interlayer ferromagnetic coupling between the Cu spins in YBa${}_2$ Cu${}_3$ O${}_{7-x}$ grown on top of La${}_{0.7}$ Ca${}_{0.3}$ MnO${}_3$
• Superconductor to Mott insulator transition in YBa${}_2$Cu${}_3$O${}_7$/LaCaMnO${}_3$ heterostructures
• Magnetic proximity effect at interface between a cuprate superconductor and an oxide spin valve
• Proximity driven commensurate pinning in YBa2Cu3O7 through all-oxide magnetic nanostructures
• Magnetic Switching in Weyl Semimetal-Superconductor Heterostructures
• Exchange Field-Mediated Magnetoresistance in the Correlated Insulator Phase of Be Films