Magnetic Vortex Excitation Frequencies and Eigenmodes in a Pair of Coupled Circular Dots
Magnetic Vortex Excitation Frequencies and Eigenmodes in a Pair of Coupled Circular Dots
复制标题
DOI：
10.1143/apex.4.065003
复制
发表时间：
2011-06
影响因子：
2.3
通讯作者：
O. Sukhostavets;Julian M. Gonzalez;K. Guslienko
中科院分区：
文献类型：
--
作者：
O. Sukhostavets;Julian M. Gonzalez;K. Guslienko
计算了在一对横向图案圆点中振荡的两个耦合磁涡流的低频动力学。应用涡核位置的线性化蒂勒运动方程来描述动力学。主要重点是激发自旋本征模的对称性以及通过在不同方向施加可变驱动磁场来激发它们的可能性。强调了点间耦合积分分解中高阶多极项的重要性。解释了最近一些关于图案薄膜中耦合磁涡动力学的实验。
The low frequency dynamics of two coupled magnetic vortices oscillating in a pair of laterally patterned circular dots are calculated. The linearized Thiele equations of motion of the vortex core positions are applied to describe the dynamics. The main emphasis is put on the symmetry of the excited spin eigenmodes and the possibility to excite them by applying the variable driving magnetic fields in different directions. The importance of the high-order multipole terms in the interdot coupling integrals decomposition is underlined. Some recent experiments on the coupled magnetic vortex dynamics in patterned films are interpreted.