来自下游中性模式的意外隧穿电流
Unexpected tunneling current from downstream neutral modes
摘要：
我们分析了量子点接触在分数量子霍尔态中的输运。我们表明，这两个噪声（如预期的和以前计算的其他作者）和（也许令人惊讶的）的平均传输电流的影响下游扰动内的标准边缘状态模型。我们考虑两种不同的情况下下游扰动。我们认为，在传输电流的变化应该是可观察到的实验中观察到的噪声增加。
英文摘要：
We analyze transport through a quantum point contact in fractional quantum Hall states with counter-propagating neutral edge modes. We show that both the noise (as expected and previously calculated by other authors) and (perhaps surprisingly) the average transmitted current are affected by downstream perturbations within the standard edge state model. We consider two different scenarios for downstream perturbations. We argue that the change in transmitted current should be observable in experiments that have observed increased noise.
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