论文标题
随机 - 动型铁磁体中的局部自旋波模式和微波吸收
Localized Spin-Wave Modes and Microwave Absorption in Random-Anisotropy Ferromagnets
论文作者
论文摘要
已经开发了随机肛门磁体中局部自旋波激发的理论。从纯净的海森贝格铁磁铁开始，我们研究有限大小的样品中静置自旋波的演变朝向局部模式，以增加随机各向异性的强度。在2D样本中分析和可视化局部模式及其相的曲线。定位长度是通过几种方法获得的，并且计算其对随机各向异性的依赖性。阐明了旋转激发的定位与随机触觉磁体吸收微波功率的宽带性质之间的联系。
The theory of localized spin-wave excitations in random-anisotropy magnets has been developed. Starting with a pure Heisenberg ferromagnet, we study the evolution of standing spin waves in a finite-size sample towards localized modes on increasing the strength of random anisotropy. Profiles of the localized modes and their phases are analyzed and visualized in a 2D sample. Localization length is obtained by several methods and its dependence on random anisotropy is computed. The connection between the localization of spin excitations and the broadband nature of the absorption of microwave power by random-anisotropy magnets is elucidated.
