Lorentz transmission electron microscopy for magnetic skyrmions imaging

doi:10.1088/1674-1056/28/8/087503

Abstract Magnetic skyrmions have interesting properties, including their small size, topological stability, and extremely low threshold current for current-driven motion. Therefore, they are regarded as promising candidates for next-generation magnetic memory devices. Lorentz transmission electron microscopy (TEM) has an ultrahigh magnetic domain resolution (~2 nm), it is thus an ideal method for direct real-space imaging of fine magnetic configurations of ultra-small skyrmions. In this paper, we describe the basic principles of Lorentz-TEM and off-axis electron holography and review recent experimental developments in magnetic skyrmion imaging using these two methods.

Keywords: magnetic skyrmion Lorentz transmission microscope nanostructures

Received: 17 May 2019
Revised: 29 June 2019
Accepted manuscript online:

PACS:	75.75.-c	(Magnetic properties of nanostructures)
	75.75.Fk	(Domain structures in nanoparticles)

Fund: Project supported by the National Key Research and Development Program of China, (Grant No. 2017YFA0303201), the Key Research Program of Frontier Sciences, CAS, (Grant No. QYZDB-SSW-SLH009), the National Natural Science Foundation of China (Grant Nos. 51622105 and 11804343), the President Foundation of Hefei Institutes of Physical Science, CAS (Grant No. YZJJ2018QN15), and the Major/Innovative Program of Development Foundation of Hefei Center for Physical Science and Technology, (Grant No. 2016FXCX001).

Corresponding Authors: Weiwei Wang
E-mail: wangweiwei@ahu.edu.cn

Cite this article:

Jin Tang(汤进), Lingyao Kong(孔令尧), Weiwei Wang(王伟伟), Haifeng Du(杜海峰), Mingliang Tian(田明亮) Lorentz transmission electron microscopy for magnetic skyrmions imaging 2019 Chin. Phys. B 28 087503

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Lorentz transmission electron microscopy for magnetic skyrmions imaging

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