Spin-battery and spin-current transport through a quantum dot
Spin-battery and spin-current transport through a quantum dot
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DOI：
10.1103/physrevb.69.205312
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发表时间：
2004-05
影响因子：
3.7
通讯作者：
Da-Kun Wang;Qing-feng Sun;Hong Guo
中科院分区：
文献类型：
--
作者：
Da-Kun Wang;Qing-feng Sun;Hong Guo
我们比较了各种最近提出的自旋电池设备提供的自旋电流的来源。根据化学势的设置，我们将它们分为三种类型：对称偶极、不对称偶极和单极自旋电池。我们提出了一个模型，其中这三种不同类型的自旋电池耦合到同一个量子点，以产生自旋电流传输。我们发现，偶极自旋电池给出了类似的结果，而非常不同的结果被发现为单极设备。
We compare various recently proposed spin-battery devices which provide source of spin current. We sort them into three types according to the chemical-potential setup: the symmetric dipolar, the asymmetric dipolar, and the unipolar spin batteries. We propose a model in which these three different types of spin battery are coupled to the same quantum dot to generate spin-current transport. We find that the dipolar spin batteries give similar results while very different results are found for the unipolar device.