Comparison of quantization of charge transport in periodic and open pumps

Details Comparison of quantization of charge transport in periodic and open pumps Comparison of quantization of charge transport in periodic and open pumps

2007-09-19

arxiv.org/abs/0709.3033v1

Physics

Mathematical Physics

7 pages

Scientific paper

10.1103/PhysRevB.77.033304

We compare the charges transported in two systems, a spatially periodic and an open quantum pump, both depending periodically and adiabatically on time. The charge transported in a cycle was computed by Thouless, respectively by Buttiker et al. in the two cases. We show that the results agree in the limit where the two physical situations become the same, i.e., that of a large open pump.

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