Effect of injected spins with different polarized orientations on the vortex phase transition in La{sub 0.7}Sr{sub 0.3}MnO{sub 3}/La{sub 1.85}Sr{sub 0.15}CuO{sub 4} heterostructure
- Hefei National Laboratory for Physical Sciences at Microscale, Department of Physics, University of Science and Technology of China, Hefei 230026 (China)
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031 (China)
The current-voltage (I-V) characteristics with spin injection were investigated for the epitaxial La{sub 0.7}Sr{sub 0.3}MnO{sub 3}/La{sub 1.85}Sr{sub 0.15}CuO{sub 4} 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{sub g}) and upper critical field (H{sub c2}) indicates that both H{sub g} and H{sub 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.
- OSTI ID:
- 22410133
- Journal Information:
- Journal of Applied Physics, Vol. 117, Issue 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
Similar Records
Effect of injected spins with different polarized orientations on the superconductivity of La{sub 0.7}Sr{sub 0.3}MnO{sub 3}/La{sub 1.85}Sr{sub 0.15}CuO{sub 4} thin films
Structural, magnetic, and superconducting properties of pulsed-laser-deposition-grown / superlattices on (001)-oriented substrates