| Spin-Flip of Polaron in Polymers with a Magnetic Impurity |
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| 作者姓名： | 陈美娟 鄢永红 吴长勤 |
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| 作者单位： | Department of Physics, Fhdan University, Shanghai 200433 |
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| 基金项目： | Supported by National Natural Science Foundation of China under Grant Nos 10674026 and 10321003, and the EC Project of SPIN （NMP3-CT-2006-033370）. |
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| 摘 要： | Using a nonadiabatic evolution method, we investigate the spin-flip process of polaron in polymers with a magnetic impurity. Our results show that when the spin orientation of this impurity is fixed to be perpendicular to the spin of polaron （θ = π/2）, the magnetic impurity causes a spin-flip process. The probability of the spin-flip increases with the increase of exchange integral J up to about 0.35 eV and then decreases with the increase of J. In the case J is fixed while the spin orientation is adjustable, we find the probability of the spin-flip varies with the impurity orientation and reaches a maximum value at θ=π/2.
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| 关 键 词： | 极分子 自旋片 高分子材料 磁性掺杂物 |
| 收稿时间： | 2006-11-3 |
| 修稿时间： | 2006-11-03 |
Spin-Flip of Polaron in Polymers with a Magnetic Impurity |
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| CHEN Mei-Juan,YAN Yong-Hong,WU Chang-Qin.Spin-Flip of Polaron in Polymers with a Magnetic Impurity[J].Chinese Physics Letters,2007,24(6):1690-1692. |
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| Authors: | CHEN Mei-Juan YAN Yong-Hong WU Chang-Qin |
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| Affiliation: | Department of Physics, Fudan University, Shanghai 200433 |
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| Abstract: | |
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| Keywords: | 71 38 -k 72 25 -b 72 80 Le |
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