Self-consistent calculation of tunneling current in w-GaN/AlGaN(0001) two-barrier heterostructures; Semiconductors; Vol. 40, iss. 6

書誌詳細
Parent link:Semiconductors: Scientific Journal
Vol. 40, iss. 6.— 2006.— [P. 675-680]
第一著者: Grinyaev S. N. Sergey Nikolaevich
その他の著者: Razzhuvalov A. N. Alexander Nikolaevich
要約:Title screen
The specific features of the tunneling current in wurtzite GaN/AlGaN(0001) two-barrier structures are studied by solving the Schrodinger equation and the Poisson equation simultaneously, with regard to spontaneous and piezoelectric polarizations. It is shown that the internal fields manifest themselves in the asymmetry of the tunneling current via the value of the electronic charge in the quantum well. This charge is larger when the internal and external fields in the well compensate each other, resulting in smaller shifts of potential and resonance levels in the active region with voltage, in the higher resistance of the structure, and in the linear current-voltage dependence within a wide range of voltages. When the internal and external fields are the same, the current exhibits a sharp negative-differential-conductivity structure, with the peak-to-valley ratio equal to about four. The structure is similar to one of the branches of the current-voltage characteristic of the GaAs/AlGaAs(001) two-barrier structure, suggesting that nitrides are promising materials for resonance-tunneling devices.
Режим доступа: по договору с организацией-держателем ресурса
言語:英語
出版事項: 2006
シリーズ:Low-Dimensional Systems
主題:
オンライン・アクセス:http://dx.doi.org/10.1134/S1063782606060121
フォーマット: 電子媒体 図書の章
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=648238

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