Affiliation:
1. Department of Physics, National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
Abstract
We report the successful fabrication of lateral organic spin valves (OSVs) using polycrystalline pentacene as spacer and half-metallic La 0.7 Sr 0.3 MnO 3 (LSMO) as two electrodes. The distance between two electrodes ranges from 30 nm to 100 nm. The current–voltage characteristics follow the power law relation, which are attributed to the space charge limited current behavior. The devices with a spacing of 30 nm exhibits clear spin-valve characteristics with a magnetoresistance (MR) ratio of ~ 2% at 9 K. The MR effects disappear for electrode spacing about 100 nm, suggesting that the spin diffusion length is less than 100 nm.
Publisher
World Scientific Pub Co Pte Lt
Subject
Electrical and Electronic Engineering,Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials
Cited by
8 articles.
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