Abstract
The anisotropic polarized spin injection effect on the critical current density Jc of La0.7Sr0.3MnO3/La1.85Sr0.15CuO4 heterostructure is systematically investigated. It is found that the contribution of δTc pinning mechanism is enhanced with spin injection. The angle dependent Jc(θ) near H//c can be scaled by the Ginzburg-Landau (G-L) expression, while for H//ab the intrinsic pinning drives the data to deviate from the G-L fitting. The relative changes of Jc affected by spin injection show opposite variation trends with increasing fields for H//ab and H//c, which is probably related to the different suppressions of injected spins on different flux pinnings.
Highlights
The anisotropic polarized spin injection effect on the critical current density Jc of La0.7Sr0.3MnO3/La1.85Sr0.15CuO4 heterostructure is systematically investigated
Much attention has been paid to the pinning behaviors of a special HTS heterostructure system consisting of colossal magnetoresistance (CMR) materials and high temperature superconductors
Several studies revealed that the pinning potentials in YBa2Cu3O7-δ (YBCO)/La0.7Ca0.3MnO3 and YBCO/La0.7Sr0.3MnO3 heterostructures are much smaller than the values obtained for HTS/nonmagnetic heterostructures,[8,9,10] and the polarized spin orientation of the F layer may play a crucial role for the suppression of pinning potential.[11]
Summary
The anisotropic polarized spin injection effect on the critical current density Jc of La0.7Sr0.3MnO3/La1.85Sr0.15CuO4 heterostructure is systematically investigated. Influence of spin injection on the critical current density in La0.7Sr0.3MnO3/La1.85Sr0.15CuO4 heterostructure
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