Quantum Hall ice
Quantum Hall ice
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DOI：
10.1103/physrevb.90.241102
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发表时间：
2014-12-01
影响因子：
3.7
通讯作者：
Batista, Cristian D.
中科院分区：
文献类型：
--
作者：
Chern, Gia-Wei;Rahmani, Armin;Batista, Cristian D.
我们发现，手性可果梅冰流形表现出反常的整数量子霍尔效应（IQHE）时，耦合到巡回电子。虽然电子介导的相互作用选择一个磁有序的基态，完整的冰歧管可以共存的IQHE在有限的温度范围内。简并冰态提供了幂律相关通量无序的自然实现，系统的光谱间隙仍然是鲁棒的。量子化（指数小的有限温度校正）霍尔电导持续在很宽的范围内的电子密度，由于无序诱导的本地化的电子状态。
We show that the chiral kagome ice manifold exhibits an anomalous integer quantum Hall effect (IQHE) when coupled to itinerant electrons. Although electron-mediated interactions select a magnetically ordered ground state, the full ice manifold can coexist with the IQHE over a range of finite temperatures. The degenerate ice states provide a natural realization of power-law correlated flux disorder, for which the spectral gap of the system remains robust. The quantized (up to exponentially small finite-temperature corrections) Hall conductance persists over a wide range of electron densities due to the disorder-induced localization of electronic states.