论文标题
对称对耦合磁振荡器的静态和动态特性的对称作用
Symmetry effects on the static and dynamic properties of coupled magnetic oscillators
论文作者
论文摘要
对称性对抗磁性耦合振荡器的共振光谱的影响通过发现对称性诱导的抗跨性抗跨性的振荡器引起了新的兴趣。在这里，我们通过实验表征了合成抗铁磁铁PT/COFEB/RU/COFEB/PT的共振光谱，在那里我们能够独立地调整两个耦合磁体的有效磁化。为了模拟我们的结果，我们将小组理论的数学方法应用于Landau Lifshitz Gilbert方程的解决方案。这种通常应用于量子机械系统的通用方法使我们能够以对称性破裂的形式识别共振光谱的主要特征，并与晶体抗fiferromagnets进行直接比较。
The effect of symmetry on the resonance spectra of antiferromagnetically coupled oscillators has attracted new interest with the discovery of symmetry-breaking induced anti-crossings. Here, we experimentally characterise the resonance spectrum of a synthetic antiferromagnet Pt/CoFeB/Ru/CoFeB/Pt, where we are able to independently tune the effective magnetisation of the two coupled magnets. To model our results we apply the mathematical methods of group theory to the solutions of the Landau Lifshitz Gilbert equation. This general approach, usually applied to quantum mechanical systems, allows us to identify the main features of the resonance spectrum in terms of symmetry breaking and to make a direct comparison with crystal antiferromagnets.
