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来自圆偏振激光器的高阶波,用于对2D切尔恩绝缘体和2D拓绝缘体中的拓状态的分类

Dasol Kim^1,2, Alexis Chacón^1,2, Dong Eon Kim^1,2

¹Department of Physics and Center for Attosecond Science and Technology, POSTECH, 7 Pohang 37673, Republic of Korea.

Journal of physics. Condensed matter : an Institute of Physics journal

|August 31, 2023

概括

高阶波 (HH) 可以检测二维量子材料中的拓过渡. 循环偏光增强了拓切尔恩绝缘体 (CI) 和拓绝缘体 (TI) 的波强度,表明了它们的拓性质.

科学领域:

凝聚物质物理学凝聚物质物理学
量子材料科学是一种量子材料科学.
非线性光学是一种非线性光学.

背景情况:

高阶波 (HH) 产生是探测材料属性的强大工具.
在二维量子材料中的光物质相互作用可以编码结构,动态和拓信息.
拓材料,如切尔恩绝缘体 (CI) 和拓绝缘体 (TI),具有由拓保护的独特电子特性.

研究的目的:

调查高阶波 (HH) 是否可以在二维 (2D) 量子材料中映射拓信息.
探索圆极化激光光与拓材料之间的相互作用.
确定使用HH用于检测拓过渡的可行性.

主要方法:

使用哈尔丹模型用于CI和凯恩-梅尔模型用于TI.
模拟这些拓材料与圆极化激光场的相互作用.
分析波强度光谱,特别是同旋转顺序.

主要成果:

循环偏振的驱动场导致CIs和TI的协转顺序中的波强度增加.
在拓上非微不足道的材料中这种增强表明HH作为拓状态的探测器.
在TIs中的旋转带干扰不会改变高原地区同旋转波的圆依赖性.

结论:

高阶波生成是一种可行的方法,用于检测二维量子材料中的拓过渡.
光的圆极化为探测拓性质提供了一个敏感的处理器.
进一步的研究可以探索HH用于表征其他拓相和材料特性.

关键词:

高波的产生高波的产生.光物质相互作用拓学材料拓学材料

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