Spin waves and domain wall modes in curved magnetic nanowires

被引：8
|
作者：
Bocklage, Lars [1 ,2 ,3 ,4 ]
Motl-Ziegler, Sandra [2 ,3 ]
Topp, Jesco [2 ,3 ]
Matsuyama, Toru [2 ,3 ]
Meier, Guido [2 ,3 ,4 ]
机构：
[1] DESY, D-22607 Hamburg, Germany
[2] Univ Hamburg, Inst Angew Phys, D-20355 Hamburg, Germany
[3] Univ Hamburg, Zentrum Mikrostrukturforsch, D-20355 Hamburg, Germany
[4] Hamburg Ctr Ultrafast Imaging, D-22761 Hamburg, Germany
来源：
JOURNAL OF PHYSICS-CONDENSED MATTER | 2014年 / 26卷 / 26期
关键词：
magnetization dynamics; spin wave; domain wall;
D O I：
10.1088/0953-8984/26/26/266003
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The confinement of spin waves in inhomogeneous fields and spin wave interaction with domain walls has attracted interest due to possible applications in magnonics. We investigate spin waves in curved ferromagnetic nanowires. The field dispersion and localization of spin waves is revealed by comparison to known modes in stripes and taking into account the specific field reversal of the curved wire. In small wires we find a strongly altered mode spectrum in a certain field regime. Micromagnetic simulations show an extended domain wall within the wire in this field region. The domain wall shows several dynamic modes and changes the remaining spin wave modes. We find mode suppression as well as newly arising modes due to the strong inhomogenous internal field of the wall.
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收藏
页数：8
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