发表机构
School of Physics and Engineering, ITMO University（ITMO大学物理与工程学院）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究揭示了一种在散射实验中不可见但影响内部辐射的内禀电磁性质，通过非互易磁电材料验证，表明散射实验不足以完整表征物质。
AI 中文摘要
材料的电磁性质通常通过其散射光的方式推断。这里我们表明这种诊断方法从根本上是不完整的。我们预测存在一种内禀电磁性质，它在任何散射实验中均不可见，与几何形状、偏振、远场或近场激发无关。然而，该性质会影响材料内部嵌入源所发射的辐射。我们针对一种结合了轴子与对偶轴子响应的特殊设计的非互易磁电材料揭示了这一现象。我们的结果确立了内禀电磁性质作为一类独特的材料响应，并表明仅凭散射实验不足以表征物质。
英文摘要
Electromagnetic properties of materials are commonly inferred from how they scatter light. Here we show that this diagnostic is fundamentally incomplete. We predict the existence of an intrinsic electromagnetic property that remains invisible in any scattering experiment independently of geometry, polarization, far-field or near-field excitation. Still, this property affects the radiation emitted by the sources embedded inside the material. We reveal this phenomenon for a specially designed nonreciprocal magnetoelectric material combining axion and dual axion responses. Our results establish intrinsic electromagnetic properties as a distinct class of material responses and show that scattering experiments alone are insufficient to characterize matter.
Comments9 pages + 66 pages of Supplemental Materials
