All-magnetic control of skyrmions in nanowires by a spin wave.

Nanotechnology

Department of Physics, The University of Hong Kong, Hong Kong, People's Republic of China.

Published: June 2015

Magnetic skyrmions are topologically protected nanoscale objects, which are promising building blocks for novel magnetic and spintronic devices. Here, we investigate the dynamics of a skyrmion driven by a spin wave in a magnetic nanowire. It is found that (i) the skyrmion is first accelerated and then decelerated exponentially; (ii) it can turn L-corners with both right and left turns; and (iii) it always turns left (right) when the skyrmion number is positive (negative) in the T- and Y-junctions. Our results will be the basis of skyrmionic devices driven by a spin wave.

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http://dx.doi.org/10.1088/0957-4484/26/22/225701DOI Listing

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