标题： 二元超材料中的体和表面磁感应呼吸子 显示英文标题

标题： Bulk and surface magnetoinductive breathers in binary metamaterials

摘要： 我们从理论上研究了一维磁性超材料中体态和表面离散呼吸子的存在性，该超材料由周期性二元阵列的分裂环谐振器组成。 这两种类型的谐振器在缝隙尺寸上有所不同，这导致了不同的共振频率。 在旋转波近似（RWA）的框架下，我们通过从反连续极限延续平凡的呼吸子解到有限耦合，构建了几种类型的呼吸子激发，适用于能量守恒系统和耗散驱动系统。 数值精确计算整合了完整的模型方程，确认了RWA结果的质量。 此外，证明了在耗散驱动系统中，由于基本不稳定性，离散呼吸子可以自发出现。 显示英文摘要

摘要： We study theoretically the existence of bulk and surface discrete breathers in a one-dimensional magnetic metamaterial comprised of a periodic binary array of split-ring resonators. The two types of resonators differ in the size of their slits and this leads to different resonant frequencies. In the framework of the rotating-wave approximation (RWA) we construct several types of breather excitations for both the energy-conserved and the dissipative-driven systems by continuation of trivial breather solutions from the anticontinuous limit to finite couplings. Numerically-exact computations that integrate the full model equations confirm the quality of the RWA results. Moreover, it is demonstrated that discrete breathers can spontaneously appear in the dissipative-driven system as a results of a fundamental instability.