论文标题

低频和MoiréFloquetEngineering:评论

Low-frequency and Moiré Floquet engineering: a review

论文作者

Rodriguez-Vega, Martin, Vogl, Michael, Fiete, Gregory A.

论文摘要

我们回顾了有关低频Floquet Engineering的最新工作及其在光线驱动的量子材料中的应用,强调了托有Moiré超级晶格的Van der Waals系统。这些非平衡系统将带结构的扭曲角度灵敏度与光驱动器的灵活性相结合。光的频率,振幅和极化可以轻松地在实验设置中调节,从而导致具有按需特性的平台。首先,我们回顾了最新的理论发展,以在不同的频率制度中得出有效的浮雕汉密尔顿人。我们将其中一些理论应用于研究扭曲的石墨烯和扭曲的过渡金属二甲化合物系统,这些系统在自由空间和波导内部被光照射。我们研究了准耐药和稳态中引起的变化,这可能导致拓扑过渡。接下来,我们考虑由与声子共振的低频光脉冲驱动的范德华磁性材料。我们从浮雕的角度讨论由光引起的声子动力学和由此产生的磁过渡。我们结束了低频制度中Moiré-Floquet工程的新指导及其与技术应用的相关性。

We review recent work on low-frequency Floquet engineering and its application to quantum materials driven by light, emphasizing van der Waals systems hosting Moiré superlattices. These non-equilibrium systems combine the twist-angle sensitivity of the band structures with the flexibility of light drives. The frequency, amplitude, and polarization of light can be easily tuned in experimental setups, leading to platforms with on-demand properties. First, we review recent theoretical developments to derive effective Floquet Hamiltonians in different frequency regimes. We apply some of these theories to study twisted graphene and twisted transition metal dichalcogenide systems irradiated by light in free space and inside a waveguide. We study the changes induced in the quasienergies and steady-states, which can lead to topological transitions. Next, we consider van der Waals magnetic materials driven by low-frequency light pulses in resonance with the phonons. We discuss the phonon dynamics induced by the light and resulting magnetic transitions from a Floquet perspective. We finish by outlining new directions for Moiré-Floquet engineering in the low-frequency regime and their relevance for technological applications.

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