A novel method for the injection and manipulation of magnetic charge states in nanostructures.

A novel method for the injection and manipulation of magnetic charge states in nanostructures.
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DOI:
10.1038/srep32864
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发表时间:
2016-09-12
期刊:
影响因子:
4.6
通讯作者:
Branford WR
Branford WR
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Gartside JC;Burn DM;Cohen LF;Branford WR

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Realising the promise of next-generation magnetic nanotechnologies is contingent on the development of novel methods for controlling magnetic states at the nanoscale. There is currently demand for simple and flexible techniques to access exotic magnetisation states without convoluted fabrication and application processes. 360° domain walls (metastable twists in magnetisation separating two domains with parallel magnetisation) are one such state, which is currently of great interest in data storage and magnonics. Here, we demonstrate a straightforward and powerful process whereby a moving magnetic charge, provided experimentally by a magnetic force microscope tip, can write and manipulate magnetic charge states in ferromagnetic nanowires. The method is applicable to a wide range of nanowire architectures with considerable benefits over existing techniques. We confirm the method’s efficacy via the injection and spatial manipulation of 360° domain walls in Py and Co nanowires. Experimental results are supported by micromagnetic simulations of the tip-nanowire interaction.
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