An artificial magnetic response is not only intellectually intriguing but also key to multiple applications. While previously suitably structured metallic particles and high-permittivity dielectric particles have been used for this purpose, here, we highlight the possibility of exploiting lattice effects to significantly enhance an intrinsically weak magnetic dipole moment of a periodically arranged scatterer. We identify the effective magnetic dipole moment as it is modulated by the lattice and coupled to other electromagnetic multipole moments the scatterer can sustain. Besides a more abstract consideration on the base of parametrized Mie coefficients to study the theoretical upper limit, we present an actual particle that shows an enhancement of the magnetic dipole moment by 100 with respect to what is attainable as a maximal value for an isolated particle.

中文翻译：

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通过利用超表面中的晶格耦合极大地增强磁偶极矩

人工磁响应不仅在智力上很有趣，而且还是多种应用的关键。虽然以前适当结构的金属颗粒和高介电常数电介质颗粒已用于此目的，但在这里，我们强调了利用晶格效应显着增强周期性排列散射体的固有弱磁偶极矩的可能性。我们确定了有效磁偶极矩，因为它被晶格调制并耦合到散射体可以承受的其他电磁多极矩。除了基于参数化 Mie 系数的更抽象的考虑来研究理论上限，