在中心对称系统中由双圆光驱诱导的光电流
Yuya Ikeda1, Sota Kitamura1, Takahiro Morimoto1
1Department of Applied Physics, The University of Tokyo, Hongo, Tokyo 113-8656, Japan.
Physical review letters
|September 18, 2023
概括
双圆光 (BCL),结合两个循环极化束,可以通过创建有效的极性在中心对称材料中产生光电流. 这项研究得出了光电流公式,并将其应用于各种半金属模型.
科学领域:
- 光学和光子学 在光学和光子学.
- 凝聚物质物理学 凝聚物质物理学
- 材料科学 材料科学 材料科学
背景情况:
- 双圆光 (BCL) 涉及两个循环偏光光束,频率不同.
- BCL模式显示基于频率比的旋转对称性.
- 中心对称系统通常缺乏固有的极性,阻碍光电流的产生.
研究的目的:
- 用BCL在中心对称系统中展示光电流的产生.
- 从理论上推导出BCL诱导的光电流的公式.
- 为了探索高强度的BCL的非扰动效应.
主要方法:
- 应用标准扰动理论来导出光电流公式.
- 一个1D模型系统的分析.
- 对3D迪拉克和韦尔半金属的研究.
- 使用Floquet技术进行非扰动效果.
主要成果:
- 通过引入有效的极性,BCL成功地在中心对称系统中诱导光电流.
- 用于BCL诱导的光电流的公式被导出并验证.
- 该研究分析了1D,3D迪拉克和韦尔半金属中的光电流生成.
- 在强光强度下使用Floquet理论探索了非扰动效应.
结论:
- BCL提供了一种用于在缺乏内在极性的材料中产生光电流的新方法.
- 该理论框架为理解和预测BCL驱动的光电流提供了基础.
- 进一步的研究可以探索先进的材料和高强度光相互作用.
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