Effect of external magnetic field on the instability of THz plasma waves in nanoscale graphene field-effect transistors

doi:10.1088/1674-1056/ad1e66

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	Effect of external magnetic field on the instability of THz plasma waves in nanoscale graphene field-effect transistors
	Zhang, Liping; Sun, Zongyao; Li, Jiani; Su, Junyan
	2024-04-01
发表期刊	CHINESE PHYSICS B
ISSN	1674-1056
卷号	33 期号:4
摘要	The instability of plasma waves in the channel of field-effect transistors will cause the electromagnetic waves with THz frequency. Based on a self-consistent quantum hydrodynamic model, the instability of THz plasmas waves in the channel of graphene field-effect transistors has been investigated with external magnetic field and quantum effects. We analyzed the influence of weak magnetic fields, quantum effects, device size, and temperature on the instability of plasma waves under asymmetric boundary conditions numerically. The results show that the magnetic fields, quantum effects, and the thickness of the dielectric layer between the gate and the channel can increase the radiation frequency. Additionally, we observed that increase in temperature leads to a decrease in both oscillation frequency and instability increment. The numerical results and accompanying images obtained from our simulations provide support for the above conclusions.
关键词	graphene field-effect transistors external magnetic field radiation frequency instability increment 81.05.ue 52.20.-j 52.35.-g
DOI	10.1088/1674-1056/ad1e66
收录类别	SCIE
语种	英语
资助项目	National Natural Science Foundation of China [12065015]; Hongliu First-level Discipline Construction Project of Lanzhou University of Technology
WOS研究方向	Physics
WOS类目	Physics, Multidisciplinary
WOS记录号	WOS:001196679100001
出版者	IOP Publishing Ltd
原始文献类型	Article
EISSN	2058-3834
引用统计	无
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/170208
专题	理学院
通讯作者	Zhang, Liping
作者单位	Lanzhou Univ Technol, Sch Sci, Lanzhou 730050, Peoples R China
第一作者单位	理学院
通讯作者单位	理学院
第一作者的第一单位	理学院
推荐引用方式 GB/T 7714	Zhang, Liping,Sun, Zongyao,Li, Jiani,et al. Effect of external magnetic field on the instability of THz plasma waves in nanoscale graphene field-effect transistors[J]. CHINESE PHYSICS B,2024,33(4).
APA	Zhang, Liping,Sun, Zongyao,Li, Jiani,&Su, Junyan.(2024).Effect of external magnetic field on the instability of THz plasma waves in nanoscale graphene field-effect transistors.CHINESE PHYSICS B,33(4).
MLA	Zhang, Liping,et al."Effect of external magnetic field on the instability of THz plasma waves in nanoscale graphene field-effect transistors".CHINESE PHYSICS B 33.4(2024).