Gubbiotti G, Madami M, Tacchi S, Carlotti G, Tanigawa H, Ono T, Giovannini L, Montoncello F, Nizzoli F
Research center SOFT-INFM-CNR, Università di Roma La Sapienza, 00185, Roma, Italy.
Phys Rev Lett. 2006 Dec 15;97(24):247203. doi: 10.1103/PhysRevLett.97.247203. Epub 2006 Dec 13.
We present a Brillouin light scattering investigation of the eigenmode spectrum of nanometric permalloy rings as a function of the applied magnetic field. In particular, different splitting effects induced by the applied magnetic field on the radial and azimuthal excitations have been observed and explained in terms of either mode localization or symmetry. The dynamical matrix approach has been used to calculate the whole set of eigenvectors and eigenvalues of the system, in both the vortex and saturated states.
我们展示了一项关于纳米坡莫合金环本征模谱随外加磁场变化的布里渊光散射研究。特别地，已观察到外加磁场对径向和方位角激发产生的不同分裂效应，并从模式局域化或对称性的角度进行了解释。动力学矩阵方法已被用于计算系统在涡旋态和饱和态下的整套本征向量和本征值。
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