Depinning of vortex domain walls from an asymmetric notch in a permalloy nanowire

被引：18

作者：

Zhu, Weiwei ^{[1
]}

Liao, Jialin ^{[1
]}

Zhang, Zongzhi ^{[1
]}

Ma, B. ^{[1
]}

Jin, Q. Y. ^{[1
,2
,3
]}

Liu, Yaowen ^{[4
]}

Huang, Zhaocong ^{[5
]}

Hu, Xuefeng ^{[5
]}

Ding, An ^{[5
]}

Wu, Jing ^{[6
]}

Xu, Yongbing ^{[5
]}

机构：

[1] Fudan Univ, Dept Opt Sci & Engn, Minist Educ, Key Lab Micro & Nano Photon Struct, Shanghai 200433, Peoples R China

[2] E China Normal Univ, State Key Lab Precis Spect, Shanghai 200062, Peoples R China

[3] E China Normal Univ, Dept Phys, Shanghai 200062, Peoples R China

[4] Tongji Univ, Dept Phys, Shanghai 200092, Peoples R China

[5] Univ York, Dept Elect, York Lab Spintron & Nanodevices, York YO10 5DD, N Yorkshire, England

[6] Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England

来源：

APPLIED PHYSICS LETTERS | 2012年 / 101卷 / 08期

关键词：

PROPAGATION;

D O I：

10.1063/1.4745788

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The mechanism of depinning process of vortex domain wall (DW) in a planar magnetic nanowire with an asymmetric notch is investigated by using focused magneto-optical Kerr effect (MOKE) magnetometer and micromagnetic modeling. Two distinct depinning fields are directly observed by the single-shot MOKE measurements. Micromagnetic modeling provides physical insight into the details of how the depinning process develops at the asymmetric notch and reveals that the different depinning fields originate from the different chiralities of the vortex DWs. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4745788]

引用

页数：4

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