| The effects of electric and magnetic fields on the current spin polarization and magnetoresistance in a ferromagnetic/organic semiconductor/ferromagnetic（FM/OSC/FM） system |
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| 作者姓名： | 王玉梅 任俊峰 原晓波 窦兆涛 胡贵超 |
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| 作者单位： | College of Physics and Electronics, Shandong Normal University, Jinan 250014, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China （Grant Nos. 10904083 and 10904084）; the Shandong Provincial Distinguished Middle-Aged and Young Scientist Encourage and Reward Foundation,China （Grant No. BS2009CL008）; the Science and Technology Foundation for Institution of Higher Education of Shandong Province,China （Grant No. J09LA03） |
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| 摘 要： | From experimental results of spin polarized injection and transport in organic semiconductors(OSCs),we theoretically study the current spin polarization and magnetoresistance under an electric and a magnetic field in a ferromagnetic/organic semiconductor/ferromagnetic(FM/OSC/FM) sandwich structure according to the spin drift-diffusion theory and Ohm’s law.From the calculations,it is found that the interfacial current spin polarization is enhanced by several orders of magnitude through tuning the magnetic and electric fields by taking into account the specific characteristics of OSC.Furthermore,the effects of the electric and magnetic fields on the magnetoresistance are also discussed in the sandwich structure.
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| 关 键 词： | organic spintronics spin diffusion and drift current spin polarization magnetoresistance |
| 收稿时间： | 2011-12-22 |
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