Probing intrinsic magnon bandgap in a layered hybrid perovskite antiferromagnet by a superconducting resonator
Probing intrinsic magnon bandgap in a layered hybrid perovskite antiferromagnet by a superconducting resonator
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DOI：
10.1103/physrevresearch.5.043031
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发表时间：
2023-10
影响因子：
4.2
通讯作者：
Yi Li;Timothy Draher;Andrew H. Comstock;Y. Xiong;Md Azimul Haque;E. Easy;Jiangchao Qian;T. Polakovic;John Pearson;R. Divan;Jian-Min Zuo;Xian Zhang;Ulrich Welp;W. Kwok;Axel Hoffmann;Joseph M. Luther;Matthew C. Beard;Dali Sun;Wei Zhang;V. Novosad
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文献类型：
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作者：
Yi Li;Timothy Draher;Andrew H. Comstock;Y. Xiong;Md Azimul Haque;E. Easy;Jiangchao Qian;T. Polakovic;John Pearson;R. Divan;Jian-Min Zuo;Xian Zhang;Ulrich Welp;W. Kwok;Axel Hoffmann;Joseph M. Luther;Matthew C. Beard;Dali Sun;Wei Zhang;V. Novosad
不同磁激发之间的相干相互作用可以形成磁振子带隙和混合磁振子模，它们可以在磁子器件和相干信息处理中得到应用。在这项工作中，我们通过与超导谐振器的强耦合，探测了层状混合钙钛矿反铁磁体的本征磁振子带隙。磁振子带隙位置显著的温度可调性允许我们在带隙内设置光子模式，导致有效的磁振子-光子耦合减弱，最终磁振子-光子杂化消失。当谐振模落入磁振子带隙时，由于与失谐的磁振子模的非零耦合，谐振器的阻尼率增大。这允许使用分析模型来量化磁振子带隙。我们的工作为控制复杂磁性材料中具有量子特性的相干信息处理带来了新的机会。
Coherent interactions between different magnetic excitations can lead to formation of magnon band gaps and hybrid magnon modes, which can find their applications in magnonic devices and coherent information processing. In this work, we probe the intrinsic magnon band gap of a layered hybrid perovskite antiferromagnet by its strong coupling to a superconducting resonator. The pronounced temperature tunability of the magnon band gap location allows us to set the photon mode within the gap, leading to a reduction of effective magnon-photon coupling and eventually the disappearance of magnon-photon hybridization. When the resonator mode falls into the magnon band gap, the resonator damping rate increases due to the nonzero coupling to the detuned magnon mode. This allows for quantification of the magnon band gap using an analytical model. Our work brings new opportunities in controlling coherent information processing with quantum properties in complex magnetic materials.