Correlated tunneling and the instability of the fractional quantum Hall edge.
Correlated tunneling and the instability of the fractional quantum Hall edge.
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DOI：
10.1103/physrevlett.100.156802
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发表时间：
2007-11
影响因子：
8.6
通讯作者：
D. Orgad;O. Agam
中科院分区：
文献类型：
--
作者：
D. Orgad;O. Agam
我们考虑了一类描述复合费米子在有效朗道能级之间关联隧穿的相互作用项。尽管是通用的和类似的强度，通常的密度-密度耦合，这些条款不包括在分数量子霍尔系统的边缘的公认理论。在这里，我们表明，他们可能会导致一个不稳定的边缘走向一个新的重建状态与额外的通道，从而证明了传统的边缘理论的不完整性。
We consider a class of interaction terms that describes correlated tunneling of composite fermions between effective Landau levels. Despite being generic and of similar strength to that of the usual density-density couplings, these terms are not included in the accepted theory of the edges of fractional quantum Hall systems. Here we show that they may lead to an instability of the edge towards a new reconstructed state with additional channels, and thereby demonstrate the incompleteness of the traditional edge theory.