Time structure of fast domain wall creation by localized fields in a magnetic nanowire

被引：8
|
作者：
Bocklage, Lars [1 ,2 ,3 ,4 ]
Stein, Falk-Ulrich [2 ,3 ]
Martens, Michael [2 ,3 ]
Matsuyama, Toru [2 ,3 ]
Meier, Guido [2 ,3 ,4 ]
机构：
[1] Deutsch Elektronen Synchrotron 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：
APPLIED PHYSICS LETTERS | 2013年 / 103卷 / 09期
关键词：
DYNAMICS;
D O I：
10.1063/1.4819729
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have investigated the generation of magnetic domain walls by nanosecond magnetic field pulses of a strip line. Domain wall creation is sensitive to an externally applied field concerning wall type and threshold amplitudes. The domain wall creation is stochastic similar to domain wall depinning. In the experiment reliable domain wall generation require up to 8 ns long pulses at the threshold field amplitude. The required pulse length can be reduced by higher field amplitudes. Time-resolved measurements and micromagnetic simulations show that the domain wall is generated within three nanoseconds. The creation proceeds via vortex core formation under the strip line. (C) 2013 AIP Publishing LLC.
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页数：4
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