论文标题
超导体/铁磁体/超导体系统中的木元素的安德森·希格斯质量
Anderson-Higgs mass of magnons in superconductor/ferromagnet/superconductor systems
论文作者
论文摘要
大规模生成的安德森·希格斯（Anderson-Higgs）机制是高能和凝结物理学的通用概念。它通过Meissner效应出现，从而提供了从超导体中驱动静态和低频磁场。然而，它不会影响由血浆频率确定的光谱间隙传播电磁波，该频谱差距太大，无法对超导过渡敏感。在这里，我们证明了Anderson-Higgs质量的光谱表现，表明它确定了超导体/铁磁性/超导体多层的强元的光谱间隙。此外，我们表明在最近的实验中已经观察到这种效果是这种系统中自发的铁磁共振频率。我们的理论解释了许多不寻常的实验特征，并提出了具有可调频谱差距和群速度逆转的有效控制。这些发现铺平了通往多种高级功能的方式，用于镁质中的可能应用。
Anderson-Higgs mechanism of mass generation is a generic concept in high-energy and condensed matter physics. It shows up through the Meissner effect providing the expulsion of static and low-frequency magnetic fields from superconductors. However, it does not affect propagating electromagnetic waves with a spectrum gap determined by the plasma frequency, which is too large to be sensitive to the superconducting transition. Here we demonstrate the spectroscopic manifestation of the Anderson-Higgs mass, showing that it determines the spectrum gap of magnons in superconductor/ferromagnet/superconductor multilayers. Moreover, we show that this effect has been observed in recent experiments as a spontaneous ferromagnetic resonance frequency shift in such systems. Our theory explains many unusual experimental features and suggests effective controls over the magnon spectrum with tunable spectral gap and group-velocity reversal. These findings pave the way to a wide range of advanced functionalities for possible applications in magnonics.
