论文标题
磁性绝缘体中对拓扑不敏感的轴心质量
Topology-insensitive axion mass in magnetic topological insulators
论文作者
论文摘要
我们研究在有限温度下具有磁性杂质的三维拓扑绝缘子中的轴突。我们发现稳定的抗铁磁基态和铁磁亚稳态状态。在这两个磁性状态下，都发现轴的质量达到EV尺度，并且在磁态的相边界附近接近零。该结果适用于正常和拓扑绝缘体阶段，即轴突质量对拓扑状态不敏感，并且在未来的实验中将直接影响粒子轴线暗物质的靶向质量范围。
We study the axion in three-dimensional topological insulators with magnetic impurities under finite temperature. We find a stable antiferromagnetic ground state and ferromagnetic metastable state. In both magnetic states, the mass of the axion is found to be up to eV scale and it approaches zero near the phase boundary of the magnetic state. This result applies to both normal and topological insulator phases, i.e., the axion mass is insensitive to the topological states, and it will have a direct impact on the targeted mass range of particle axion dark matter in future experiments.
