动态轴子绝缘体中的轴子表面波
Axionic surface wave in dynamical axion insulators
AI总结：
针对动态轴子绝缘体与电介质界面，基于修正麦克斯韦方程组揭示表面轴子极化激元的存在，提出实验探测构型，为凝聚态轴子电动力学研究提供新途径。
摘要：
三维拓扑绝缘体的电磁响应可通过含量化轴子场的有效轴子作用量描述。当时间反演和反演对称性均被破坏时（如反铁磁拓扑绝缘体中），轴子场会随磁涨落变得动态。动态轴子场与电磁场耦合时，可引发丰富物理现象。基于修正麦克斯韦方程组，我们揭示了一种奇异极化激元激发的存在，称为表面轴子极化激元，它在动态轴子绝缘体与电介质的界面传播。将动态轴子绝缘体掺杂为金属时，轴子-光子耦合与等离激元-光子耦合的共存会进一步产生混合表面轴子等离极化激元。我们还提出Kretschmann-Raether构型以实验探测表面轴子极化激元。本结果为凝聚态物理中轴子电动力学的研究提供了替代方法。
英文摘要：
The electromagnetic response of three-dimensional topological insulators can be described by an effective axion action with a quantized axion field. Once both time-reversal and inversion symmetries are broken, for example, in antiferromagnetic topological insulators, the axion field becomes dynamical along with magnetic fluctuations. The dynamical axion field, when coupled to electromagnetic fields, can lead to rich physical phenomena. Here, based on the modified Maxwell's equations, we reveal the existence of an exotic type of polariton excitation, termed a surface axion polariton, which propagates in the interface between a dynamical axion insulator and a dielectric. When doping the dynamical axion insulator to be metallic, the coexistence of axion-photon coupling and plasmon-photon coupling will further generate a mixed surface axion plasmon polariton. We also propose a Kretschmann-Raether configuration to experimentally detect the surface axion polariton. Our result provides an alternative way to study the axion electrodynamics in condensed matter physics.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
