Breathing mode of relativistic twisted electron beams under periodic magnetic field

doi:10.35848/1347-4065/abcf09

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	Breathing mode of relativistic twisted electron beams under periodic magnetic field
	Wang, Yan 1; Jia, Chenglong 2; Zhang, Pengming 3
刊名	JAPANESE JOURNAL OF APPLIED PHYSICS
	2021
卷号	60 期号:1 页码:-
关键词	Electron beams High resolution transmission electron microscopy Magnetic fields Spatial distribution Wave functions
ISSN号	0021-4922
DOI	10.35848/1347-4065/abcf09
英文摘要	Transmission electron microscopy typically works with relativistic electron beams of energy 200-300 keV whose wavelength is on the picometer scale. Here, we study theoretically the relativistic dynamics of twisted Dirac-electron beams driven by a time-oscillating magnetic field. The spatial density distribution and the spinor wave-functions of twisted electron beams at each instant time t are obtained. It is demonstrated that the spatial density distribution of electrons can be changed periodically by the external field, whose change is very similar to the Breathing. Correspondingly, the azimuthal component of the current changes periodically with the magnetic field. The central spot size of spatial distribution of is directly related to the magnitude of the magnetic field. Our results suggest that twisted electron beams are promising for testing the magnitude and frequency of ac magnetic fields created by microsources.
WOS研究方向	Physics
语种	英语
出版者	IOP Publishing Ltd
WOS记录号	WOS:000597764000001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/147374]
专题	理学院
作者单位	1.Lanzhou Univ Technol, Dept Phys, Lanzhou 730050, Peoples R China; 2.Lanzhou Univ, Key Lab Magnetism & Magnet Mat, Minist Educ, Lanzhou 730000, Peoples R China; 3.Sun Yat Sen Univ, Sch Phys & Astron, Zhuhai 519082, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yan,Jia, Chenglong,Zhang, Pengming. Breathing mode of relativistic twisted electron beams under periodic magnetic field[J]. JAPANESE JOURNAL OF APPLIED PHYSICS,2021,60(1):-.
APA	Wang, Yan,Jia, Chenglong,&Zhang, Pengming.(2021).Breathing mode of relativistic twisted electron beams under periodic magnetic field.JAPANESE JOURNAL OF APPLIED PHYSICS,60(1),-.
MLA	Wang, Yan,et al."Breathing mode of relativistic twisted electron beams under periodic magnetic field".JAPANESE JOURNAL OF APPLIED PHYSICS 60.1(2021):-.