Direct observation of high velocity current induced domain wall motion

被引：31
|
作者：
Heyne, L. [1 ]
Rhensius, J. [1 ,2 ]
Bisig, A. [1 ]
Krzyk, S. [1 ]
Punke, P. [1 ]
Klaeui, M. [1 ]
Heyderman, L. J. [2 ]
Le Guyader, L. [3 ]
Nolting, F. [3 ]
机构：
[1] Univ Konstanz, Fachbereich Phys, D-78457 Constance, Germany
[2] Paul Scherrer Inst, Lab Micro & Nanotechnol, CH-5232 Villigen, Switzerland
[3] Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland
来源：
APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 03期
基金：
欧洲研究理事会;
关键词：
flux-line lattice; magnetic domain walls; Permalloy; wires; MICROSCOPY; NANOWIRES;
D O I：
10.1063/1.3291067
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We study fast vortex wall propagation in Permalloy wires induced by 3 ns short current pulses with sub 100 ps rise time using high resolution magnetic imaging at zero field. We find a constant domain wall displacement after each current pulse as well as current induced domain wall structure changes, even at these very short timescales. The domain wall velocities are found to be above 100 m/s and independent of the domain wall spin structure. Comparison to experiments with longer pulses points to the pulse shape as the origin of the high velocities.
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页数：3
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