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Investigation of the Dyakonov-Shur instability for THz plasma waves in quantum gated cylindrical FET
Li, Dongao; Zhang, Liping; Su, Junyan
2019-12
Source PublicationAIP ADVANCES
Volume9Issue:12
AbstractPlasma waves may become unstable in the channel of field effect transistors (FETs) with asymmetric boundary conditions on source and drain, which is known as Dyakonov-Shur instability. In this letter, we extend the Dyakonov-Shur instability to the quantum gated cylindrical FET and obtain the dispersion equations describing unstable terahertz (THz) plasma waves using quantum cylindrical hydrodynamic equations. Research results show that the length of the channel and the wave vector of the circumferential direction inhibit the instability increment; however, the quantum effect, the radius of the channel, and the electron temperature enhance the instability increment. The oscillation frequency increases with the increase in the quantum effect, the wave vector of the circumferential direction, and the electron temperature, but the oscillation frequency increases with the decrease in the length and radius of the channel. Compared with the one-dimensional rectangular FET, THz plasma waves in the two-dimensional cylindrical FET have a higher oscillation frequency. (C) 2019 Author(s).
DOI10.1063/1.5130598
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[10975114]
WOS Research AreaScience & Technology - Other Topics ; Materials Science ; Physics
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
WOS IDWOS:000515522800001
PublisherAMER INST PHYSICS
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.lut.edu.cn/handle/2XXMBERH/64285
Collection理学院
Corresponding AuthorZhang, Liping
AffiliationLanzhou Univ Technol, Sch Sci, Lanzhou 730050, Peoples R China
First Author AffilicationColl Sci
Corresponding Author AffilicationColl Sci
First Signature AffilicationColl Sci
Recommended Citation
GB/T 7714
Li, Dongao,Zhang, Liping,Su, Junyan. Investigation of the Dyakonov-Shur instability for THz plasma waves in quantum gated cylindrical FET[J]. AIP ADVANCES,2019,9(12).
APA Li, Dongao,Zhang, Liping,&Su, Junyan.(2019).Investigation of the Dyakonov-Shur instability for THz plasma waves in quantum gated cylindrical FET.AIP ADVANCES,9(12).
MLA Li, Dongao,et al."Investigation of the Dyakonov-Shur instability for THz plasma waves in quantum gated cylindrical FET".AIP ADVANCES 9.12(2019).
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