论文标题
微波踩踏边缘谐振器中螺旋式Luttinger液体的表征
Characterization of helical Luttinger liquids in microwave stepped-impedance edge resonators
论文作者
论文摘要
库仑相互作用对量子旋转霍尔边缘状态的物理产生了重要影响，与自由电子相比，通过两粒子散射削弱了拓扑保护，并将集体等离子体模式的速度和电荷重新归一化。尽管有这些影响，但相互作用仍然很难量化。我们在这里提出简单且坚固的边缘谐振器几何形状，以通过高频测量来表征库仑相互作用。他们依靠传输线方法，并利用边缘状态与微波环境之间的阻抗不匹配。
Coulomb interaction has important consequences on the physics of quantum spin Hall edge states, weakening the topological protection via two-particle scattering and renormalizing both the velocity and charge of collective plasmon modes compared to that of free electrons. Despite these effects, interactions remain difficult to quantify. We propose here simple and robust edge resonator geometries to characterize Coulomb interaction by means of high-frequency measurements. They rely on a transmission line approach, and take advantage of the impedance mismatch between the edge states and their microwave environment.
