期刊
CHEMICAL PHYSICS LETTERS
卷 649, 期 -, 页码 135-140出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cplett.2016.02.054
关键词
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资金
- National Natural Science Foundation of China [11274177, 11404415]
- University of Macau [MRG022/IH/2013/FST, MYRG2014-00052-FST]
- FDCT of Macau [013/2013/A1]
We employ a new quantum simulation approach to study the magnetism of nanodisks with Dzyaloshinsky-Moriya (DM) interaction. We find that a weak external magnetic field normal to the disk plane cannot obviously affect the single AFM skyrmion structure on small disk; but if it is sufficiently strong, it can destroy the AFM skyrmion completely. By increasing DM interaction, more self-organized magnetic domains appear, the average distance of the neighboring domains agrees well with a grid theory. In this case, a magnetic anisotropy normal to the disk plane can re-construct AFM skyrmion, providing a way for experimentalists to create AMF skyrmions. (C) 2016 Elsevier B.V. All rights reserved.
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