DIPOLE-EXCHANGE SPIN WAVES IN A FERROMAGNETIC NANOTUBE

被引:4
|
作者
Gorobets, Yu. I. [1 ]
Kulish, V. V. [2 ]
机构
[1] Natl Acad Sci Ukraine, Inst Magnetism, 36-b Vernadskogo Str, UA-03142 Kiev, Ukraine
[2] Natl Tech Univ Ukraine, Kyiv Politech Inst, Dept Gen & Expt Phys, UA-03056 Kiev, Ukraine
来源
UKRAINIAN JOURNAL OF PHYSICS | 2014年 / 59卷 / 05期
关键词
spin wave; nanomagnetics; ferromagnetic nanotube; dipole-exchange theory;
D O I
10.15407/ujpe59.05.0541
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Spin waves in a cylindrical ferromagnetic nanotube are studied. A nanotube with an external magnetic field applied parallel to its symmetry axis is considered. A linearized Landau-Lifshitz equation in the magnetostatic approximation is used with regard for the magnetic dipoledipole interaction, exchange interaction, and anisotropy effects. As a result, the dispersion relation and the radial wavenumber spectrum for spin waves in the above-described nanotube are found. From the radial wavenumber spectrum, limitations on the transverse-angular modes are defined.
引用
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页码:541 / 546
页数:6
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