Ferromagnetic exchange field stabilized antiferromagnetic ordering in a cuprate superconductor

Abstract

We report experimental evidence of formation of antiferromagnetic clusters in composites made of a cuprate superconductor La1.85Sr0.15CuO4 (LCu) and a ferromagnet La0.6Sr0.4CoO3 (LCo). From linear and non-linear ac-susceptibility measurement on this composite material it is found that the exchange field of LCo suppress the dynamic antiferromagnetic spin fluctuation of LCu and convert it into the short range ordered superparamagnetic type antiferromagnetic (AFM) clusters at the cost of superconducting volume fraction. These shrank superconducting volume fraction shows quantum size effect (QSE) and follows DeGennes-Tinkham theory on finite size effect of superconductor.

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References in corpus (21)

• A Common Thread: the pairing interaction for the unconventional superconductors
• Distinct Charge Orders in the Planes and Chains of Ortho-III-Ordered YBa${}_2$Cu${}_3$O${}_{6+\delta }$ Superconductors Identified by Resonant Elastic X-ray Scattering
• Persistence of magnetic excitations in La2-xSrxCuO4 from the undoped insulator to the heavily overdoped non-superconducting metal
• Linear in Temperature Resistivity and Associated Mysteries
• Evidence for a generic novel quantum transition in high-Tc cuprates
• Angular fluctuations of a multi-component order describe the pseudogap regime of the cuprate superconductors
• Disappearance of antiferromagnetic spin excitations in over-doped La${}_{2-x}$Sr${}_x$CuO${}_4$
• Magnetic proximity effect in $\mathbf{YB}{\mathbf{a}}_2\mathbf{C}{\mathbf{u}}_3{\mathbf{O}}_7/L{\mathbf{a}}_{2/3}\mathbf{C}{\mathbf{a}}_{1/3}\mathbf{Mn}{\mathbf{O}}_3$ and $\mathbf{YB}{\mathbf{a}}_2\mathbf{C}{\mathbf{u}}_3{\mathbf{O}}_7/LaMn{\mathbf{O}}_{3+\delta }$ superlattices
• Long-range transfer of electron-phonon coupling in oxide superlattices
• Glassy Spin Freezing and NMR Wipeout Effect in the High-T_c Superconductor La1.90Sr0.10CuO4: What is the Relationship With Stripes ?
• The interparticle interaction and crossover in critical lines on field-temperature plane in Pr${}_{0.5}$Sr${}_{0.5}$MnO${}_3$ nanoparticles
• Formation of finite antiferromagnetic clusters and the effect of electronic phase separation in Pr{_0.5}Ca{_0.5}Mn{_0.975}Al{_0.025}O{_3}
• Impact of Quenched Oxygen Disorder on Charge Density Wave Order in YBa${}_2$Cu${}_3$O${}_{6+x}$
• Linear dependence of peak width in $χ(\bq, ω)$ vs T_c for YBCO superconductors
• Long-range charge density wave proximity effect at cuprate-manganate interfaces
• Competing orders in thermally fluctuating superconductors in two dimensions
• Probing a ferromagnetic critical regime using nonlinear susceptibility
• Magnetic exchange fields and domain wall superconductivity at an all-oxide superconductor / ferromagnet insulator interface
• Antiferromagnetic Correlations versus Superfluid Density in La_{2-x}Sr_xCuO_4
• Observation of a Three-Dimensional Quasi-Long-Range Electronic Supermodulation in YBa2Cu3O7-x/La0.7Ca0.3MnO3 Heterostructures
• Structural, magnetic and superconducting properties of pulsed-laser-deposition-grown $\mathrm{L}{\mathrm{a}}_{1.85}\mathrm{S}{\mathrm{r}}_{0.15}\mathrm{Cu}{\mathrm{O}}_4/L{\mathrm{a}}_{2/3}\mathrm{C}{\mathrm{a}}_{1/3}\mathrm{Mn}{\mathrm{O}}_3$ superlattices on $(001)$-oriented $\mathrm{LaSrAl}{\mathrm{O}}_4$ substrates