Floquet topological phase transitions induced by uncorrelated or correlated disorder.
影响因子：3.908
发表刊物：Phys. Rev. B
摘要：The impact of weak disorder and its spatial correlation on the topology of a Floquet system is not well understood so far. In this study, we investigate a model closely related to a two-dimensional Floquet system that has been realized in experiments. In the absence of disorder, we determine the phase diagram and identify an exotic phase characterized by edge states with alternating chirality in adjacent gaps. When weak disorder is introduced, we examine the disorder-averaged Bott index and analyze why the anomalous Floquet topological insulator is favored by both uncorrelated and correlated disorder, with the latter having a stronger effect. For a system with a ring-shaped gap in the energy spectrum, the Born approximation fails to explain the topological phase transition, unlike for a system with a pointlike gap.
论文类型：期刊论文
卷号：109
页面范围：184201
是否译文：否
发表时间：2024-05-01
收录刊物：SCI