论文标题
高磁场中的时间域Terahertz光谱
Time-Domain Terahertz Spectroscopy in High Magnetic Fields
论文作者
论文摘要
在凝结物质中，磁场依赖性包含对所涉及电子的状态和动力学的重要洞察力中，有多种基础和集体的terahertz频率激发。通常，确定光学电导率张量的频率，温度和磁场依赖性，尤其是在高磁场上，可以阐明复杂的多体固体行为背后的微观物理。尽管有先进的Terahertz光谱技术以及可用的高磁场生成技术，但两者的组合仅是最近才实现的。在这里，我们回顾了高磁场中Terahertz时域光谱实验的当前状态。我们首先概述时间域Terahertz检测方案，特别关注如何将它们纳入光学上可访问的高场磁体中。还讨论了不同类型的磁铁在执行Terahertz时域光谱实验中的优势和缺点。最后，我们强调了一些新的引人入胜的物理现象，这些现象是由Terahertz时域光谱在高磁场中揭示的。
There are a variety of elementary and collective terahertz-frequency excitations in condensed matter whose magnetic field dependence contains significant insight into the states and dynamics of the electrons involved. Often, determining the frequency, temperature, and magnetic field dependence of the optical conductivity tensor, especially in high magnetic fields, can clarify the microscopic physics behind complex many-body behaviors of solids. While there are advanced terahertz spectroscopy techniques as well as high magnetic field generation techniques available, combination of the two has only been realized relatively recently. Here, we review the current state of terahertz time-domain spectroscopy experiments in high magnetic fields. We start with an overview of time-domain terahertz detection schemes with a special focus on how they have been incorporated into optically accessible high-field magnets. Advantages and disadvantages of different types of magnets in performing terahertz time-domain spectroscopy experiments are also discussed. Finally, we highlight some of the new fascinating physical phenomena that have been revealed by terahertz time-domain spectroscopy in high magnetic fields.
