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DFT comparison of structural and electronic properties of (5, 0) zig-zag GaAs nanotube and (5, 0) zig-zag GaSb nanotube | ||
Journal of Nanoanalysis | ||
دوره 8، شماره 1، خرداد 2021، صفحه 1-6 اصل مقاله (760.65 K) | ||
نوع مقاله: Original Research Paper | ||
شناسه دیجیتال (DOI): 10.22034/jna.2021.681543 | ||
نویسنده | ||
Monir Kamalian* | ||
Department of Physics, Yadegar-e-Imam Khomeini (RAH) shahre rey Branch, Islamic Azad University, 1815163111, Tehran, Iran | ||
چکیده | ||
Abstract. The structural, electronic and transport properties of the (5, 0) zig-zag GaAs nanotube and (5, 0) zig-zag GaSb nanotube have been studied by using Density Functional Theory (DFT) combined with Non-Equilibrium Green’s Function (NEGF) formalism with TranSIESTA software. The electronic band structure (EBS), density of states (DOS), band gap (BG), current-voltage (I-V) characteristics and quantum conductance curves (dI/dV) of these two structures were studied under low-bias conditions. The obtained results demonstrate that these two structures exhibit semiconducting behavior, but the (5, 0) zig-zag GaSb nanotube has a smaller band gap and the highest value of the electron density of states, hence it is an important candidate in the field of infrared-radiation detectors, resonant tunnelling devices and laser diodes. Instead the (5, 0) zig-zag GaAs nanotube showed the amazing property of Negative Differential Resistance (NDR) that it has played a vital role in high frequency oscillators, reflection amplifiers, memories and switching devices. | ||
کلیدواژهها | ||
Gallium Arsenide nanotube Gallium Antimonide nanotube DFT I؛ V character NDR | ||
آمار تعداد مشاهده مقاله: 290 تعداد دریافت فایل اصل مقاله: 382 |