论文标题
偶极相互作用对腔磁杆极光龙的影响
Effect of dipolar interactions on cavity magnon-polaritons
论文作者
论文摘要
在球体之间强烈的相互偶极相互作用的背景下，已经研究了电磁腔与两个Yttrium铁石榴石（YIG）球之间的强光子马格农。随着球体之间的距离降低，观察到YIG球与电磁腔之间的耦合强度的降低，以及总磁损耗的增加。铁电磁共振线宽的不均匀拓宽模型，部分通过偶性变窄效应减轻了，重现了实验观察到的耦合强度的降低。这些发现对理解强耦合光子磁通系统具有重要意义，该系统涉及密集的磁性物体，例如铁磁纳米线阵列，其中，与电磁腔的总耦合强度可能由于相互二极化的相互作用而受到限制。
The strong photon-magnon coupling between an electromagnetic cavity and two yttrium iron garnet (YIG) spheres has been investigated in the context of a strong mutual dipolar interaction between the spheres. A decrease in the coupling strength between the YIG spheres and the electromagnetic cavity is observed, along with an increase of the total magnetic losses, as the distance between the spheres is decreased. A model of inhomogeneous broadening of the ferromagnetic resonance linewidth, partly mitigated by the dipolar narrowing effect, reproduces the reduction in the coupling strength observed experimentally. These findings have important implications for the understanding of strongly coupled photon-magnon system involving densely packed magnetic objects, such as ferromagnetic nanowires arrays, in which the total coupling strength with an electromagnetic cavity might become limited due to mutual dipolar interactions.
