| 嵌入并联耦合量子点的介观环路的磁极化传输电流 |
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| 引用本文： | 吴绍全,谌雄文,王文梁.嵌入并联耦合量子点的介观环路的磁极化传输电流[J].四川师范大学学报(自然科学版),2006,29(1):74-77. |
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| 作者姓名： | 吴绍全 谌雄文 王文梁 |
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| 作者单位： | 四川师范大学,物理与电子工程学院,四川,成都,610066 |
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| 基金项目： | 四川省应用基础研究计划;四川省教育厅资助项目 |
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| 摘 要： | 利用格林函数并借助于双杂质的Anderson模型的哈密顿，研究了相干输运通过一嵌入并联耦合量子点（DQD）的非平衡介观电路的磁极化电流的性质，得到了一些新的结果：在有限温度下，磁极化传输电流（MPC）在满足一定的条件会发生方向的反转而突出了MPC对介观电路的磁极化特点，由于加在DQD两端的偏压和电路所处的低温度环境都是实验可以达到的，MPC也达到了利用纳米技术可以观察的程度．
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| 关 键 词： | 磁极化电流 耦合量子点 传输函数 |
| 文章编号： | 1001-8395（2006）01-0074-04 |
| 收稿时间： | 2004-04-28 |
| 修稿时间： | 2004年4月28日 |
Magnetic Polarization Currents of Submicroscopic Circuit in Parallel-coupled Double Quantum Dots Devices |
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| WU Shao-quan,CHEN Xiong-wen,WANG Wen-liang.Magnetic Polarization Currents of Submicroscopic Circuit in Parallel-coupled Double Quantum Dots Devices[J].Journal of Sichuan Normal University(Natural Science),2006,29(1):74-77. |
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| Authors: | WU Shao-quan CHEN Xiong-wen WANG Wen-liang |
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| Institution: | College of Physics and Eletronic Engineering, Sichuan Normal University, Chengdu 610066, Sichuan |
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| Abstract: | The properties of the magnetic polarization currents(MPC) in parallel-coupled double quantum dots devices are studied by means of the two-inpurity Anderson Hamiltonian and Green function.It is shown that by varying some conditons such as temperatrue,coupling strength and biase voltage,the direction and magnitude of MPC can be changed,which imply that the magnetic polarization of MPC can affect on submicroscopic circuit.Because of the performance of the bias added to DQD and the lower temperatures in experiments,the MPC will be so large that it can be observed by current nanotechnology. |
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| Keywords: | Magnetic polarization currents Coupled quantum dot Transmission function |
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