Lorentz transmission electron microscopy studies on topological magnetic domains<xref rid="cpb_27_6_066802fn1" ref-type="fn">*</xref> <fn id="cpb_27_6_066802fn1"> <label>*</label> <p>Project supported by the National Key Research and Development Program of China (Grant No. 2016YFB0700902), the National Natural Science Foundation of China (Grant Nos. 51590880, 11674379, 51431009, 11674373, and 51625101), and the Youth Innovation Promotion Association of the Chinese Academy of Sciences (Grant No. 2015004).</p> </fn>

Lorentz transmission electron microscopy studies on topological magnetic domains* *

Project supported by the National Key Research and Development Program of China (Grant No. 2016YFB0700902), the National Natural Science Foundation of China (Grant Nos. 51590880, 11674379, 51431009, 11674373, and 51625101), and the Youth Innovation Promotion Association of the Chinese Academy of Sciences (Grant No. 2015004).

Peng Li-cong^{1, 2}, Zhang Ying^{1, †}, Zuo Shu-lan^{1, 2}, He Min^{1, 2}, Cai Jian-wang^{1, 2}, Wang Shou-guo³, Wei Hong-xiang¹, Li Jian-qi^{1, 2}, Zhao Tong-yun¹, Shen Bao-gen^{1, 2}

(color online) Magnetic skyrmion evolution by tuning the electric current density, at a fixed magnetic field of 270 Oe, at values: (a) 0, (b) 5.01, (c) 6.81, (d) 7.36 (× 10⁸ A⋅m⁻²). (e) High-density skyrmions at J = 0. (f) Zero-field and high-density skyrmions at J = 0 and H = 0. The scale bar in panel (a) is 200 nm.^[79]