Influence of spin injection on the critical current density in La{sub 0.7}Sr{sub 0.3}MnO{sub 3}/La{sub 1.85}Sr{sub 0.15}CuO{sub 4} heterostructure

The anisotropic polarized spin injection effect on the critical current density J{sub c} of La{sub 0.7}Sr{sub 0.3}MnO{sub 3}/La{sub 1.85}Sr{sub 0.15}CuO{sub 4} heterostructure is systematically investigated. It is found that the contribution of δT{sub c} pinning mechanism is enhanced with spin injec...

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Bibliographic Details
Published inAIP advances Vol. 4; no. 12
Main Authors Zhang, M. J., Teng, M. L., Hao, F. X., Yin, Y. W., Li, X. G., Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, Zeng, Z.
Format Journal Article
LanguageEnglish
Published United States 15.12.2014
Subjects
ANISOTROPY
CRITICAL CURRENT
CURRENT DENSITY
GINZBURG-LANDAU THEORY
MAGNETIC FLUX
MATERIALS SCIENCE
SPIN
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Summary:The anisotropic polarized spin injection effect on the critical current density J{sub c} of La{sub 0.7}Sr{sub 0.3}MnO{sub 3}/La{sub 1.85}Sr{sub 0.15}CuO{sub 4} heterostructure is systematically investigated. It is found that the contribution of δT{sub c} pinning mechanism is enhanced with spin injection. The angle dependent J{sub c}(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 J{sub c} 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.
ISSN:2158-3226
2158-3226
DOI:10.1063/1.4904950