Magnetic skyrmions: intriguing physics and new spintronic device concepts

• 来源期刊: 国家科学评论（英文版）
• 年，卷（期）: 2019,（2）
• 页码范围: 210-212
• 页数: 3页
• 语种: 英文
• DOI: 10.1093/nsr/nwy109

摘要

The mathematical concept of skyrmions was first introduced by high-energy physicist Tony Skyrme in 3D space for describing the stability of hadrons as objects possessing non-trivial topological numbers in a non-linear sigma model.Later on, the original concept of skyrmions was generalized to various condensed-matter systems such asBose-Einstein condensates, liquidcrystal phases, photonic systems, and quantum Hall systems exhibiting the quantum Hall effect [1-3].Recently,skyrmions have been realized in magnetic crystals and multilayers lackinginversion symmetry.