کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8948990 | 1645693 | 2018 | 17 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
First principles study of electronic structure and carrier mobility in β-armchair antimony nanotubes
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
In recent work, we have investigated the structure and stability of β-armchair antimony nanotubes (SbNT) using density functional theory (DFT). We studied electronic properties like electronic band structure, density of states (DOS) and mechanical properties such as stiffness constant, Poisson's ratio, and mechanical strength for these nanotubes. We found that these nanotubes are energetically stable and semiconducting in nature with band-gap varying between 1.32 eV to 1.47 eV. We have also calculated effective mass and carrier mobility for these nanotubes. Furthermore, stiffness constant and mechanical strength of these nanotubes increases with increase in diameter. While, (4,4) nanotube shows anomalously higher strength than other nanotubes. The results of effective mass and carrier mobility for these nanotubes shows that electrons have higher effective mass and therefore lesser mobility than holes for most of the nanotubes. Our calculations show that β-armchair antimony nanotubes (SbNT) could be use in nano-electronics.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 382, Issue 40, 12 October 2018, Pages 2978-2983
Journal: Physics Letters A - Volume 382, Issue 40, 12 October 2018, Pages 2978-2983
نویسندگان
Shilpa Singh, Sanjeev K. Gupta, Yogesh Sonvane, P.N. Gajjar,