Transport and dissipation in quantum pumps
Transport and dissipation in quantum pumps
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DOI：
10.1023/b:joss.0000037245.45780.e1
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发表时间：
2004-08-01
影响因子：
1.6
通讯作者：
Sadun, L
中科院分区：
文献类型：
--
作者：
Avron, JE;Elgart, A;Sadun, L
本文是关于量子泵中的绝热输运。“能量位移”的概念，一个对维格纳时间延迟的自伴随算子，在我们的方法中发挥了作用：它决定了量子泵中的电流、耗散、噪声和熵流。我们讨论了绝热输运的几何和拓扑内容，并表明Thouless和Niu通过陈氏数进行量子化输运的机制不能在陈氏数必然消失的量子泵中实现。
This paper is about adiabatic transport in quantum pumps. The notion of "energy shift,'' a self-adjoint operator dual to the Wigner time delay, plays a role in our approach: It determines the current, the dissipation, the noise and the entropy currents in quantum pumps. We discuss the geometric and topological content of adiabatic transport and show that the mechanism of Thouless and Niu for quantized transport via Chern numbers cannot be realized in quantum pumps where Chern numbers necessarily vanish.