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

doi:10.1063/1.4904950

AIP Advances (Dec 2014)

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

Affiliations

M. J. Zhang: Hefei National Laboratory for Physical Sciences at Microscale, Department of Physics, University of Science and Technology of China, Hefei 230026, P. R. China
M. L. Teng: Hefei National Laboratory for Physical Sciences at Microscale, Department of Physics, University of Science and Technology of China, Hefei 230026, P. R. China
F. X. Hao: Hefei National Laboratory for Physical Sciences at Microscale, Department of Physics, University of Science and Technology of China, Hefei 230026, P. R. China
Y. W. Yin: Hefei National Laboratory for Physical Sciences at Microscale, Department of Physics, University of Science and Technology of China, Hefei 230026, P. R. China
X. G. Li: Hefei National Laboratory for Physical Sciences at Microscale, Department of Physics, University of Science and Technology of China, Hefei 230026, P. R. China
Z. Zeng: Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, P. R. China

DOI: https://doi.org/10.1063/1.4904950
Journal volume & issue: Vol. 4, no. 12
pp. 127138 – 127138-7

Abstract

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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.

Published in AIP Advances

ISSN: 2158-3226 (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Science: Physics
Website: http://aipadvances.aip.org/

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