Effect of injected spins with different polarized orientations on the vortex phase transition in La0.7Sr0.3MnO3/La1.85Sr0.15CuO4 heterostructure

被引：1
作者：
Zhang, M. J. [1 ]
Teng, M. L. [1 ]
Hao, F. X. [1 ]
Yin, Y. W. [1 ]
Zeng, Z. [2 ]
Li, X. G. [1 ,3 ]
机构：
[1] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Dept Phys, Hefei 230026, Peoples R China
[2] Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China
[3] Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China
来源：
JOURNAL OF APPLIED PHYSICS | 2015年 / 117卷 / 17期
基金：
中国国家自然科学基金;
关键词：
GLASS TRANSITION; THIN-FILMS; SUPERCONDUCTORS; SUPERLATTICES; TRANSPORT; CRYSTALS;
D O I：
10.1063/1.4914540
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The current-voltage (I-V) characteristics with spin injection were investigated for the epitaxial La0.7Sr0.3MnO3/La1.85Sr0.15CuO4 heterostructure rotated from H//c to H//ab in magnetic fields up to 14 T. It is found that all the I-V curves in various magnetic fields can be scaled with a three dimensional (3D) vortex glass model, and the spin injection can induce a better 3D scaling behavior, which is closely related to the decrease of the anisotropy parameter. A vortex phase diagram for the evolution of vortex glass transition field (H-g) and upper critical field (H-c2) indicates that both H-g and H-c2 are suppressed by spin injection, and this effect becomes more obvious in the case of H//ab, which probably originates from the different suppression on the superconducting pairing strength by different injected spins' orientations. (C) 2015 AIP Publishing LLC.
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页数：4
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