| Nonlocal Andreev reflection with Rashba spin-orbital interaction in a triple-quantum-dot ring |
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| 作者姓名： | 彭菊 郁华玲 左芬 |
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| 作者单位： | School of Physics and Electronic Electrical Engineering, Huaiyin Normal University, Huaian 223300, China |
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| 基金项目： | Project supported by the Natural Science Foundation of Education Bureau of Jiangsu Province of China (Grant Nos. 08KJB140002 and 09KJD430004). |
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| 摘 要： | We theoretically studied the nonlocal Andreev reflection with Rashba spin-orbital interaction in a triple-quantumdot(QD) ring,which is introduced as Rashba spin-orbital interaction to act locally on one component quantum dot.It is found that the electronic current and spin current are sensitive to the systematic parameters.The interdot spin-flip term does not play a leading role in causing electronic and spin currents.Otherwise the spin precessing term leads to shift of the peaks of the the spin-up and spin-down electronic currents in different directions and results in the spin current.Moreover,the spin-orbital interaction suppresses the nonlocal Andreev reflection,so we cannot obtain the pure spin current.
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| 关 键 词： | nonlocal Andreev reflection Rashba spin-orbital interaction spin flip spin precess |
| 收稿时间： | 2010-04-29 |
| 修稿时间： | 7/3/2010 12:00:00 AM |
Nonlocal Andreev reflection with Rashba spin–orbital interaction in a triple-quantum-dot ring |
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| Peng Ju,Yu Hua-Ling and Zuo Fen.Nonlocal Andreev reflection with Rashba spin-orbital interaction in a triple-quantum-dot ring[J].Chinese Physics B,2010,19(12):127402-127402. |
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| Authors: | Peng Ju Yu Hua-Ling and Zuo Fen |
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| Affiliation: | School of Physics and Electronic Electrical Engineering, Huaiyin Normal University, Huaian 223300, China |
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| Abstract: | We theoretically studied the nonlocal Andreev reflection with Rashba spin–orbital interaction in a triple-quantum-dot (QD) ring, which is introduced as Rashba spin–orbital interaction to act locally on one component quantum dot. It is found that the electronic current and spin current are sensitive to the systematic parameters. The interdot spin-flip term does not play a leading role in causing electronic and spin currents. Otherwise the spin precessing term leads to shift of the peaks of the the spin-up and spin-down electronic currents in different directions and results in the spin current. Moreover, the spin–orbital interaction suppresses the nonlocal Andreev reflection, so we cannot obtain the pure spin current. |
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| Keywords: | nonlocal Andreev reflection Rashba spin–orbital interaction spin flip spin precess |
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