arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0910.2642cond-mat.mes-hall
收藏

nu=2量子霍尔边缘通道中能量交换和高频噪声的等离子体散射方法

Plasmon scattering approach to energy exchange and high frequency noise in nu=2 quantum Hall edge channels

Pascal Degiovanni, Charles Grenier, Gwendal Fève, Carles Altimiras, Hélène Le Sueur, Frédéric Pierre

摘要:

在填充因子nu= 2的量子霍尔制度的边缘间通道相互作用进行了分析内的等离子体散射形式主义。我们推导出边缘通道之间的能量重新分配和高频噪声,这是充分表征低能量等离子体散射的解析表达式。在强相互作用的限制,能量重新分配的预测与最近的实验数据进行比较,并发现再现大部分观察到的功能。通过假设25%的注入能量朝向其他自由度损失,可以实现定量一致性,所述其他自由度可能是针对平滑边缘电势预测的附加无间隙激发。

英文摘要:

Inter-edge channel interactions in the quantum Hall regime at filling factor nu= 2 are analyzed within a plasmon scattering formalism. We derive analytical expressions for energy redistribution amongst edge channels and for high frequency noise, which are shown to fully characterize the low energy plasmon scattering. In the strong interaction limit, the predictions for energy redistribution are compared with recent experimental data and found to reproduce most of the observed features. Quantitative agreement can be achieved by assuming 25 % of the injected energy is lost towards other degrees of freedom, possibly the additional gapless excitations predicted for smooth edge potentials.

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。

↑