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Criteria of the electron pumping in electron-hole quantum plasma
Physica Scripta ( IF 2.6 ) Pub Date : 2020-07-15 , DOI: 10.1088/1402-4896/ab9e24
M S Afify 1 , R E Tolba 2 , W M Moslem 2, 3
Affiliation  

The degradation of quantum semiconductor plasma during electron pumping is an important problem since it has several applications in the technological industry. Moreover, the identification of such a problem cannot be accomplished by experiment alone and a further theoretical investigation is required. Owing to the energy gap of semiconductors, electrons should acquire energy in order to move from the valence band to the conduction band. Therefore, to employ the quantum fluid model that includes the exchange-correlation potentials, Bohm potential, and the degenerate pressure, the electron-hole lifetime should be greater than the plasma oscillation time. If the latter condition is not satisfied, the quantum fluid model failed to describe the system and it is convenient to use the density functional theory. As a result of that, we apply the quantum fluid model to GaN where the plasma oscillation has a time of 0.002 ps while the electron-hole lifetime is 1 ps. The modified Kadomtse...

中文翻译:

电子-空穴量子等离子体中的电子泵浦准则

电子泵浦期间量子半导体等离子体的退化是一个重要的问题,因为它在技术行业中有多种应用。此外,不能仅通过实验来识别这种问题,并且需要进一步的理论研究。由于半导体的能隙,电子应获取能量以便从价带移动到导带。因此,要使用包含交换相关电位,Bohm电位和简并压力的量子流体模型,电子空穴的寿命应大于等离子体的振荡时间。如果不满足后一个条件,则量子流体模型无法描述该系统,并且使用密度泛函理论很方便。结果,我们将量子流体模型应用于GaN,其中等离子振荡的时间为0.002 ps,而电子空穴的寿命为1 ps。改装的Kadomtse ...
更新日期:2020-07-16
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