边缘重构的升高霍尔响应作为诊断指标
介观与纳米尺度物理
2026-04-08 v2
摘要
我们研究了 量子霍尔态中的边缘重构情景, focus on upstream 和 downstream 电荷与中性模式的配置。我们的分析表明,在多端口几何中,电荷和中性模式的共存会导致电气 () 和热 () 霍尔电导率与 bulk-boundary correspondence 所决定的预期量化值的显著偏离。特别是,我们发现电气和热霍尔电导率都可以显著放大——超过其未重构值的两倍——为边缘重构提供了明确的诊断。
引用
@article{arxiv.2505.08746,
title = {Elevated Hall Responses as Indicators of Edge Reconstruction},
author = {Sampurna Karmakar and Amulya Ratnakar and Sourin Das},
journal= {arXiv preprint arXiv:2505.08746},
year = {2026}
}
备注
12 pages, 4 figures; investigation of excess shot noise is included to provide a deeper insight into the role of upstream neutral modes and equilibration processes; version accepted for publication in Physical Review B