skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: 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

Abstract

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.

Authors:
; ; ;  [1];  [2];  [1];  [3]
  1. Hefei National Laboratory for Physical Sciences at Microscale, Department of Physics, University of Science and Technology of China, Hefei 230026 (China)
  2. Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031 (China)
  3. (China)
Publication Date:
OSTI Identifier:
22410133
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 117; Journal Issue: 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CRITICAL FIELD; CUPRATES; ELECTRIC CONDUCTIVITY; EPITAXY; HETEROJUNCTIONS; INTERFACES; LANTHANUM COMPOUNDS; MANGANATES; PHASE DIAGRAMS; PHASE TRANSFORMATIONS; SPIN; SPIN ORIENTATION; STRONTIUM COMPOUNDS; THREE-DIMENSIONAL LATTICES; VORTICES

Citation Formats

Zhang, M. J., Teng, M. L., Hao, F. X., Yin, Y. W., Zeng, Z., Li, X. G., E-mail: lixg@ustc.edu.cn, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093. 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. United States: N. p., 2015. Web. doi:10.1063/1.4914540.
Zhang, M. J., Teng, M. L., Hao, F. X., Yin, Y. W., Zeng, Z., Li, X. G., E-mail: lixg@ustc.edu.cn, & Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093. 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. United States. doi:10.1063/1.4914540.
Zhang, M. J., Teng, M. L., Hao, F. X., Yin, Y. W., Zeng, Z., Li, X. G., E-mail: lixg@ustc.edu.cn, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093. Thu . "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". United States. doi:10.1063/1.4914540.
@article{osti_22410133,
title = {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},
author = {Zhang, M. J. and Teng, M. L. and Hao, F. X. and Yin, Y. W. and Zeng, Z. and Li, X. G., E-mail: lixg@ustc.edu.cn and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093},
abstractNote = {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.},
doi = {10.1063/1.4914540},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 17,
volume = 117,
place = {United States},
year = {2015},
month = {5}
}