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journal article·2014-12-01Open access

Influence of spin injection on the critical current density in La0.7Sr0.3MnO3/La1.85Sr0.15CuO4 heterostructure

M. J. Zhang, M. L. Teng, F. X. Hao, Y. W. Yin, X. G. Li, Z. Zeng

AIP Advances· Volume 4· Issue 12
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Source abstract

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.
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Research context

OpenAlex topics: Magnetic and transport properties of perovskites and related materials · Physics of Superconductivity and Magnetism · Advanced Condensed Matter Physics

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Affiliations

University of Science and Technology of China 1 Hefei National Laboratory for Physical Sciences at Microscale, Department of Physics, , Hefei 230026, P. R. China

Nanjing University 2 Collaborative Innovation Center of Advanced Microstructures, , Nanjing, 210093, P. R. China

Chinese Academy of Sciences 3 Key Laboratory of Materials Physics, Institute of Solid State Physics, , Hefei 230031, P. R. China

Funding

the Fundamental Research Funds for the Central Universities · the NBRPC · National Natural Science Foundation of China

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