利用轴子拓扑反铁磁体探测暗物质的方案
A Proposal to Detect Dark Matter Using Axionic Topological Antiferromagnets
摘要：
反铁磁掺杂拓扑绝缘体（A-TI）是动力学轴子场和轴子极化激元的候选者之一;弱相互作用准粒子类似于暗轴子，一种长期寻求的候选暗物质粒子。在这里，我们证明，使用轴子准粒子反铁磁共振在A-TI的结合低噪声的方法检测太赫兹光子提出了一个可行的路线，以检测质量为0.7至3.5毫电子伏的轴子暗物质，目前无法进入其他暗物质检测实验和建议的范围。这种方法在高频下的优点是谐振与施加磁场的可调谐性，以及使用体积远大于1 mm $^3$的A-TI样品。
英文摘要：
Antiferromagnetically doped topological insulators (A-TI) are among the candidates to host dynamical axion fields and axion-polaritons; weakly interacting quasiparticles that are analogous to the dark axion, a long sought after candidate dark matter particle. Here we demonstrate that using the axion quasiparticle antiferromagnetic resonance in A-TI's in conjunction with low-noise methods of detecting THz photons presents a viable route to detect axion dark matter with mass 0.7 to 3.5 meV, a range currently inaccessible to other dark matter detection experiments and proposals. The benefits of this method at high frequency are the tunability of the resonance with applied magnetic field, and the use of A-TI samples with volumes much larger than 1 mm$^3$.
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