论文标题
二维物质系统的宽带微波光谱
Broadband Microwave Spectroscopy for Two-Dimensional Material Systems
论文作者
论文摘要
近年来，出现了有趣的材料，这些材料只能作为微米尺度片，并且可以通过宽带微波光谱法可以更好地理解其新颖的物理学。示例包括扭曲的双层石墨烯[1]，观察到多体相的2D材料[2]和用于模拟量子模拟的人工晶格[3]。不幸的是，大多数以前的技术对低于MM的侧面尺寸的薄片不敏感。我们提出了一种简单的技术，该技术不需要复杂的样品制备或欧姆接触，并通过理论和模拟显示，人们将能够在定性测量感兴趣的光谱特征，并定量测量频率依赖性的复杂电导率。
In recent years, interesting materials have emerged which are only available as micron-scale flakes, and whose novel physics might be better understood through broadband microwave spectroscopy; examples include twisted bilayer graphene [1], 2D materials in which many-body phases are observed [2], and artificial lattices for analog quantum simulations [3]. Most previous techniques are unfortunately not sensitive for flakes below mm lateral sizes. We propose a simple technique which does not require sophisticated sample preparation nor Ohmic contact and show through theory and simulations that one will be able to qualitatively measure spectral features of interest, and quantitatively measure the frequency-dependent complex conductivity.
