اثر میدان مغناطیسی عمودی بر خواص الکترونی و ترابردی نانو نوارهای سیلیسین لبه دسته مبلی

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشکده فیزیک، دانشگاه سمنان، سمنان، ایران

2 دانشکده فیزیک، دانشگاه دامغان، دامغان، ایران

چکیده

در این مقاله، اثر اعمال میدان مغناطیسی عمودی بر خواص الکترونی و ترابردی سه گروه از نانو نوارهای سیلیسین لبه دسته مبلی بررسی شد. نانو نوارهای سیلیسین مورد مطالعه دارای 5 الی 7 اتم سیلیکون در عرض می‌باشند که گاف‌های نواری متفاوتی دارند. میدان مغناطیسی عمودی با قدرت‌های 0/1، 0/2 و 0/3 الکترون ولت به نانو نوارها اعمال شد. با اعمال میدان مغناطیسی عمودی، تغییراتی در آرایش الکترونی نانو نوار به‌وجود آمد، در نتیجه خواص الکترونی و ترابردی نانو نوارها نظیر طیف گسیل، ساختار نواری و مشخصه جریان- ولتاژ تغییر یافت. نتایج نشان داد که اعمال میدان مغناطیسی عمودی به نانو نوارهای سیلیسین لبه دسته مبلی که تحت اختلاف پتانسیل الکتریکی قرار گرفته‌اند باعث افزایش جریان عبوری می‌شود. محاسبات با استفاده از تقریب تنگ بست به همراه فرمول‌بندی تابع گرین غیرتعادلی انجام شد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Effect of Vertical Magnetic Field on the Electronic and Transport Properties of Armchair Silicene Nanoribbons

نویسندگان [English]

  • R. Kalami 1
  • S. A. Ketabi 2
1 Faculty of Physics, Semnan University, Semnan, Iran
2 School of Physics, Damghan University, Damghan, Iran
چکیده [English]

In this paper, the electronic and transport properties of three groups of armchair Silicene nanoribbons were investigated in the presence of a vertical magnetic field. The Silicene nanoribbons were modeled with N=5-7 silicon atoms in width, each having different band gaps. Vertical magnetic field with strengths of h=0.1 eV, 0.2 eV, and 0.3 eV were applied to the nanoribbons. By applying a vertical magnetic field, changes were observed in the electronic arrangement of the nanoribbons. As a result, the electronic and transport properties of nanoribbons such as emission spectrum, band structure, and current-voltage (I-V) characteristics were changed. The results indicated that applying a vertical magnetic field to the armchair silicene nanoribbons subjected to electric potential difference enhances the current. To extract the electronic and transport properties of the nanoribbons, a tight-binding model coupled with the non-equilibrium Green’s function formalism was employed.

کلیدواژه‌ها [English]

  • Silicene
  • Vertical magnetic field
  • Band structure
  • Electronic transmission spectra
  • Current-voltage characterization

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مواد پیشرفته در مهندسی
دوره 42، شماره 2
شهریور 1402
صفحه 41-52

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