Spin-polarized tunneling of La0.67Sr0.33MnO3/YBa2Cu3O7-d junctions

Abstract

The transport properties between ferromagnets and high-Tc superconductors are investigated in La0.67Sr0.33MnO3/YBa2Cu3O7-d (LSMO/YBCO)junctions in the geometry of cross-strip lines. The conductance spectra show zero-bias conductance peaks (ZBCP), reflecting the charge transport in the ab-plane. When an external magnetic field is applied to the junctions, the conductance spectra show two notable features, i.e., an increase of background conductance and an asymmetric ZBCP splitting whose amplitude responds nonlinearly to the applied field. It is shown that the magnetic field response are consistent with a theoretical prediction of tunneling spectroscopy when the presence of a ferromagnetic barrier between a spin-polarized ferromagnet and a d-wave superconductor is assumed.

10 Pages, 7 EPS figures, Submitted to Phys. Rev. B

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Cited by in corpus (13)

• Optimized fabrication of high quality La0.67Sr0.33MnO3 thin films considering all essential characteristics
• Temperature-dependence of spin-polarized transport in ferromagnet / unconventional superconductor junctions
• A phenomenological theory of zero-energy Andreev resonant states
• Spin-polarized quasiparticle transport in cuprate superconductors
• Influence of impurity scattering on tunneling conductance in normal metal- d -wave superconductor junctions
• Signature of a crossed Andreev reflection effect (CARE) in the magnetic response of YBCO junctions with the itinerant ferromagnet SrRuO_3
• Magnetic Field Scaling of the Conductance of Epitaxial Cuprate-Manganite Bilayers
• Josephson effect in d-wave superconductor junctions in a lattice model
• First- and Second-Order Phase Transitions, Fulde-Ferrel Inhomogeneous State and Quantum Criticality in Ferromagnet/Superconductor Double Tunnel Junctions
• Point Contact Spectra on YBa${}_2$Cu${}_3$O${}_{7-x}$/La${}_{0.7}$Ca${}_{0.3}$MnO${}_3$ bilayers
• Spin-Polarized Transport in Ferromagnet-Marginal Fermi Liquid Systems
• Influence of impurity-scattering on tunneling conductance in d-wave superconductors with broken time reversal symmetry
• Ferromagnetic features on zero-bias conductance peaks in ferromagnet/insulator/superconductor junction