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arXiv 1703.04463cond-mat.mes-hall
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Dzyaloshinskiii-Moriya相互作用对磁振子晶体和受限结构的FMR谱的影响

Influence of the Dzyaloshinskii-Moriya interaction on the FMR spectrum of magnonic crystals and confined structures

M. Mruczkiewicz, M. Krawczyk

摘要:

研究了表面诱导Dzyaloshinskiii-Moriya相互作用对厚度调制的一维磁振子晶体和孤立条纹的铁磁共振谱的影响。研究发现,吸收峰的强度显著增加,横向量子化模式的频率发生偏移。通过分析用频域和时域计算方法计算的动态磁激励的幅度和相位分布来确定阻尼器的作用。我们提出了实验上可实现的磁振子晶体和具有多个FMR吸收峰的受限结构。利用FMR谱线之间的频率或磁场间隔,提出了一种估计磁感应强度的方法。

英文摘要:

We study the effect of surface-induced Dzyaloshinskii-Moriya interaction (DMI) on the ferromagnetic resonance (FMR) spectrum of thickness-modulated one-dimensional magnonic crystals and isolated stripes. The DMI is found to substantially increases the intensity of absorption peaks and shifts the frequencies of the laterally quantized modes. The role of the DMI is determined by analyzing the amplitude and phase distributions of dynamic magnetic excitations calculated with frequency- and time-domain calculation methods. We propose experimentally realizable magnonic crystals and confined structures with multiple FMR absorption peaks. The frequency or magnetic field separation between FMR lines is exploited to propose a method for estimation of the DMI strength.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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