期刊
PHYSICAL REVIEW B
卷 97, 期 13, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.97.134403
关键词
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资金
- Royal Society (United Kingdom)
- United Kingdom Engineering and Physical Sciences Research Council (EPSRC) [EP/N032128/1]
- EPSRC [EP/M028771/1]
- Japan Society for the Promotion of Science (JSPS) Core-to-Core Program, Advanced Research Networks
- JSPS [17H06889]
- EPSRC [EP/M028771/1, EP/N032128/1] Funding Source: UKRI
- Grants-in-Aid for Scientific Research [17H06889] Funding Source: KAKEN
We report the discovery of attractive magnetic skyrmions and their clusters in noncentrosymmetric ferromagnets. These three-dimensional solitons have been predicted to exist in the cone phase of chiral ferromagnets [J. Phys: Condens. Matter 28, 35LT01 (2016)] and are fundamentally different from the more common repulsive axisymmetric skyrmions that occur in the magnetically saturated state. We present real-space images of these skyrmion clusters in thin (similar to 70 nm) single-crystal samples of Cu2OSeO3 taken using transmission electron microscopy and develop a phenomenological theory describing this type of skyrmion.
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