标题： 射频SQUID超材料中的耗散孤子 显示英文标题

标题： Dissipative breathers in rf SQUID metamaterials

摘要： 在射频SQUID（超导量子干涉装置）阵列中耗散孤子的存在性和稳定性被数值研究。在这样的阵列中，每个SQUID固有的非线性以及每个SQUID与其最近邻之间的弱磁耦合导致离散孤子的形成。我们分析了在存在损耗的情况下，由交流通量源驱动的射频SQUID阵列中的几种离散孤子激发。内部功率损耗和输入功率之间的微妙平衡导致在相对较大的耦合参数下形成耗散离散孤子（DDB）结构。结果表明，DDBs可能会局部改变射频SQUID阵列的磁响应，使其从顺磁性变为抗磁性或反之。 显示英文摘要

摘要： The existence and stability of dissipative breathers in rf SQUID (Superconducting Quantum Interference Device) arrays is investigated numerically. In such arrays, the nonlinearity which is intrinsic to each SQUID, along with the weak magnetic coupling of each SQUID to its nearest neighbors, result in the formation of discrete breathers. We analyze several discrete breather excitations in rf SQUID arrays driven by alternating flux sources in the presence of losses. The delicate balance between internal power losses and input power, results in the formation of dissipative discrete breather (DDB) structures up to relatively large coupling parameters. It is shown that DDBs may locally alter the magnetic response of an rf SQUID array from paramagnetic to diamagnetic or vice versa.