研究结果表明，量子点中的相干自旋振荡可以导致自旋电流的产生。
The coherent spin oscillations in the dot provide a source for generating spin current.
这在自旋电子学中是一个重要的性质，因为使自旋电子学器件工作的就是自旋电流。
This is an important property in the spintronics, because what makes spin devices work is spin current.
当左右电子库之间存在偏压时，通过对系统的自旋电流与电荷流公式的分析，得到系统中只存在电荷流而没有自旋电流的条件。
It is discovered that when there is bias between the left and right reservoirs, we can get the condition of system with only charge current.
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