期刊
JOURNAL OF PHYSICS D-APPLIED PHYSICS
卷 50, 期 50, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/1361-6463/aa95f2
关键词
AFM skyrmion; logic gate; spin hall effect
资金
- National Science Fund of China [11574121, 51371092]
Controllable manipulations of magnetic skyrmions are essential for next-generation spintronic devices. Here, the duplication and merging of skyrmions, as well as logical AND and OR functions, are designed in antiferromagnetic (AFM) materials with a cusp or smooth Y-junction structures. The operational time are in the dozens of picoseconds, enabling ultrafast information processing. A key factor for the successful operation is the relatively complex Y-junction structures, where domain walls propagate through in a controlled manner, without significant risks of pinning, vanishing or unwanted depinning of existing domain walls, as well as the nucleation of new domain walls. The motions of a multi-bit, namely the motion of an AFM skyrmion-chain in racetrack, are also investigated. Those micromagnetic simulations may contribute to future AFM skyrmion-based spintronic devices, such as nanotrack memory, logic gates and other information processes.
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