Spin-Wave Interference in Three-Dimensional Rolled-Up Ferromagnetic Microtubes

被引：63

作者：

Balhorn, Felix

Mansfeld, Sebastian

Krohn, Andreas

Topp, Jesco

Hansen, Wolfgang

Heitmann, Detlef

Mendach, Stefan ^{[1
]}

机构：

[1] Univ Hamburg, Inst Angew Phys, D-20355 Hamburg, Germany

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 104卷 / 03期

关键词：

FILMS; NANOTECHNOLOGY; NANOTUBES; MODES;

D O I：

10.1103/PhysRevLett.104.037205

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have investigated spin-wave excitations in rolled-up Permalloy microtubes using microwave absorption spectroscopy. We find a series of quantized azimuthal modes which arise from the constructive interference of Damon-Eshbach-type spin waves propagating around the circumference of the microtubes, forming a spin-wave resonator. The mode spectrum can be tailored by the tube's radius and number of rolled-up layers.

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页数：4

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