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Mechanism of spin-polarized transport in perovskite oxide heterojunctions[J]. PHYSICS, 2007, 36(05): 365-369.
Citation: Mechanism of spin-polarized transport in perovskite oxide heterojunctions[J]. PHYSICS, 2007, 36(05): 365-369.
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Mechanism of spin-polarized transport in perovskite oxide heterojunctions

  • 中国科学院物理研究所北京凝聚态物理国家实验室 北京100080

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  • Published Date: May 19, 2007
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  • A model of spin-polarized transport in perovskite oxide p-n heterostructures is introduced based on the weak Hund coupling and semiconductor energy band theory. The positive colossal magnetoresistance (CMR) effect in the heterojunction of La0.9Sr0.1MnO3/SrNb0.01Ti0.99O3 (LSMO/SNTO), which is composed of the negative CMR material LSMO and the nonmagnetic material SNTO, can be explained by using this model. Our theory paves a novel way for the understanding of the spin-polarized transport mechanism in these oxide heterostructures.
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