论文标题
来自1T-TAS $ _2 $的电荷密度波的大型光学可调节性在不连贯的照明下
Large optical tunability from charge density waves in 1T-TaS$_2$ under incoherent illumination
论文作者
论文摘要
密切相关的材料具有复杂的能量景观，并拥有许多有趣的物理现象，包括电荷密度波（CDW）。自1972年第一次发现以来，已经观察到CDW并广泛研究了许多材料。然而，它们提供了足够的发现机会。在这里，我们在室温下的光照明下，在准2D CDW材料（1T-TAS $ _2 $）的光学响应中报告了很大的可调性。我们表明，观察到的可调节性是光诱导的CDW堆叠重排的结果，这是1T-TAS $ _2 $的层。基于这一假设，我们的模型与实验相当吻合，表明域间相互作用是控制强相关材料阶段的重要旋钮。
Strongly correlated materials possess a complex energy landscape and host many interesting physical phenomena, including charge density waves (CDWs). CDWs have been observed and extensively studied in many materials since their first discovery in 1972. Yet, they present ample opportunities for discovery. Here, we report a large tunability in the optical response of a quasi-2D CDW material, 1T-TaS$_2$, upon incoherent light illumination at room temperature. We show that the observed tunability is a consequence of light-induced rearrangement of CDW stacking across the layers of 1T-TaS$_2$. Our model, based on this hypothesis, agrees reasonably well with experiments suggesting that the interdomain CDW interaction is a vital knob to control the phase of strongly correlated materials.
