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arXiv 1012.0315cond-mat.mes-hall
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中性模热输运与分数量子霍尔散粒噪声

Neutral mode heat transport and fractional quantum Hall shot noise

So Takei, Bernd Rosenow

摘要:

研究了分数量子霍尔体系中具有一个或多个反向传播中性模的非平衡边缘态输运。我们考虑一个设置,其中的中性模式被加热的热点,和由中性模式的热传输的霍尔酒吧的上下边缘之间的温度差的原因。这种温度差是由它引起的量子点接触散射的过量噪声探测的。我们发现,在量子点接触的多余的噪声提供了证据,对传播的中性模式,我们计算其依赖于两个边缘之间的温度差和源漏偏置。

英文摘要:

We study nonequilibrium edge state transport in the fractional quantum Hall regime for states with one or several counter-propagating neutral modes. We consider a setup in which the neutral modes are heated by a hot spot, and where heat transported by the neutral modes causes a temperature difference between the upper and lower edges in a Hall bar. This temperature difference is probed by the excess noise it causes for scattering across a quantum point contact. We find that the excess noise in the quantum point contact provides evidence for counter-propagating neutral modes, and we calculate its dependence on both the temperature difference between the edges and on source drain bias.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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