| 人造双原子分子的自旋极化电子输运 |
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| 引用本文： | 穆惠英,张雪梅,张晓媛,高洪潮,李丽欣,王立屏.人造双原子分子的自旋极化电子输运[J].河北科技大学学报,2011,32(3):216-219. |
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| 作者姓名： | 穆惠英 张雪梅 张晓媛 高洪潮 李丽欣 王立屏 |
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| 作者单位： | 河北化工医药职业技术学院化工系,河北石家庄,050026 |
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| 基金项目： | 国家自然科学基金资助项目(11047184) |
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| 摘 要： | 利用非平衡格林函数方法研究了Aharonov-Bohm环中人造双原子分子的自旋极化电子输运性质.计算了量子点中自旋相关的占有数、自旋积累以及系统总电导和自旋极化率.发现两电极之间的耦合强度以及量子点之间的耦合强度对系统自旋相关输运性质以及总的电导有重要影响.
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| 关 键 词： | 双原子分子 自旋极化 非平衡格林函数 |
| 收稿时间： | 2010/12/24 0:00:00 |
| 修稿时间： | 2011/3/11 0:00:00 |
Spin polarized transport in artificial diatomic molecule |
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| MU Hui-ying,ZHANG Xue-mei,ZHANG Xiao-yuan,GAO Hong-chao,LI Li-xin and WANG Li-ping.Spin polarized transport in artificial diatomic molecule[J].Journal of Hebei University of Science and Technology,2011,32(3):216-219. |
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| Authors: | MU Hui-ying ZHANG Xue-mei ZHANG Xiao-yuan GAO Hong-chao LI Li-xin and WANG Li-ping |
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| Institution: | MU Hui-ying,ZHANG Xue-mei,ZHANG Xiao-yuan,GAO Hong-chao,LI Li-xin,WANG Li-ping (Department of Chemistry Engineering,Hebei Chemical and Pharmaceutical Vocational Technology College,Shijiazhuang Hebei 050026,China) |
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| Abstract: | Using nonequilibrium Green's function method,we studied the spin polarized transport in artificial diatomic molecule embedded in Aharonov-Bohm ring.The spin-dependent occupation numbers and spin accumulation in quantum dots,the total conductance and spin polarization have been calculated.We find that the coupling between the two leads and the coupling between the two dots play decisive roles in the spin-dependent transport properties and the total conductance. |
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| Keywords: | diatomic molecule spin polarization nonequilibrium Green's function |
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