THE EFFECT OF CRITICAL ELECTRIC FIELDS ON THE ELECTRONIC DISTRIBUTION OF BILAYER ARMCHAIR GRAPHENE NANORIBBONS
We employed tight-binding calculations and Green’s function formalism to investigate the effect of applied electric fields on the energy band and electronic properties of bilayer armchair graphene nanoribbons (BL-AGNRs). The results show that the perpendicular electric field has a strong impact on m...
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Trường Đại học Đà Lạt
2023
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| Truy cập trực tuyến: | https://tckh.dlu.edu.vn/index.php/tckhdhdl/article/view/973 https://scholar.dlu.edu.vn/thuvienso/handle/DLU123456789/114428 |
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oai:scholar.dlu.edu.vn:DLU123456789-1144282023-10-27T14:46:41Z THE EFFECT OF CRITICAL ELECTRIC FIELDS ON THE ELECTRONIC DISTRIBUTION OF BILAYER ARMCHAIR GRAPHENE NANORIBBONS Nguyen, Lam Thuy Duong Nguyen, Thi Kim Quyen Pham, Nguyen Huu Hanh Le, Dang Khoa Ngo, Van Chinh Phan, Thi Kim Loan Huynh, Anh Huy Vu, Thanh Tra We employed tight-binding calculations and Green’s function formalism to investigate the effect of applied electric fields on the energy band and electronic properties of bilayer armchair graphene nanoribbons (BL-AGNRs). The results show that the perpendicular electric field has a strong impact on modifying and controlling the bandgap of BL-AGNRs. At the critical values of this electric field, distortions of energy dispersion in subbands and the formation of new electronic excitation channels occur strongly. These originate from low-lying energies near the Fermi level and move away from the zero-point with the increment of the electric field. Phase transitions and structural changes clearly happen in these materials. The influence of the parallel electric field is less important in changing the gap size, resulting in the absence of the critical voltage over a very wide range [–1.5 V; 1.5 V] for the semiconductor-insulator group. Nevertheless, it is interesting to note the powerful role of the parallel electric field in modifying the energy band and electronic distribution at each energy level. These results contribute to an overall picture of the physics model and electronic structure of BL-AGNRs under stimuli, which can be a pathway to real applications in the future, particularly for electronic devices. 2023-03-04T08:26:05Z 2023-03-04T08:26:05Z 2021 Article 0866-787X https://tckh.dlu.edu.vn/index.php/tckhdhdl/article/view/973 https://scholar.dlu.edu.vn/thuvienso/handle/DLU123456789/114428 10.37569/DalatUniversity.11.4.973(2021) en Tạp chí Khoa học Đại học Đà Lạt, Tập 11, Số 4; tr. 98-112 application/pdf Trường Đại học Đà Lạt |
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Thư viện Trường Đại học Đà Lạt |
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English |
| description |
We employed tight-binding calculations and Green’s function formalism to investigate the effect of applied electric fields on the energy band and electronic properties of bilayer armchair graphene nanoribbons (BL-AGNRs). The results show that the perpendicular electric field has a strong impact on modifying and controlling the bandgap of BL-AGNRs. At the critical values of this electric field, distortions of energy dispersion in subbands and the formation of new electronic excitation channels occur strongly. These originate from low-lying energies near the Fermi level and move away from the zero-point with the increment of the electric field. Phase transitions and structural changes clearly happen in these materials. The influence of the parallel electric field is less important in changing the gap size, resulting in the absence of the critical voltage over a very wide range [–1.5 V; 1.5 V] for the semiconductor-insulator group. Nevertheless, it is interesting to note the powerful role of the parallel electric field in modifying the energy band and electronic distribution at each energy level. These results contribute to an overall picture of the physics model and electronic structure of BL-AGNRs under stimuli, which can be a pathway to real applications in the future, particularly for electronic devices. |
| format |
Article |
| author |
Nguyen, Lam Thuy Duong Nguyen, Thi Kim Quyen Pham, Nguyen Huu Hanh Le, Dang Khoa Ngo, Van Chinh Phan, Thi Kim Loan Huynh, Anh Huy Vu, Thanh Tra |
| spellingShingle |
Nguyen, Lam Thuy Duong Nguyen, Thi Kim Quyen Pham, Nguyen Huu Hanh Le, Dang Khoa Ngo, Van Chinh Phan, Thi Kim Loan Huynh, Anh Huy Vu, Thanh Tra THE EFFECT OF CRITICAL ELECTRIC FIELDS ON THE ELECTRONIC DISTRIBUTION OF BILAYER ARMCHAIR GRAPHENE NANORIBBONS |
| author_facet |
Nguyen, Lam Thuy Duong Nguyen, Thi Kim Quyen Pham, Nguyen Huu Hanh Le, Dang Khoa Ngo, Van Chinh Phan, Thi Kim Loan Huynh, Anh Huy Vu, Thanh Tra |
| author_sort |
Nguyen, Lam Thuy Duong |
| title |
THE EFFECT OF CRITICAL ELECTRIC FIELDS ON THE ELECTRONIC DISTRIBUTION OF BILAYER ARMCHAIR GRAPHENE NANORIBBONS |
| title_short |
THE EFFECT OF CRITICAL ELECTRIC FIELDS ON THE ELECTRONIC DISTRIBUTION OF BILAYER ARMCHAIR GRAPHENE NANORIBBONS |
| title_full |
THE EFFECT OF CRITICAL ELECTRIC FIELDS ON THE ELECTRONIC DISTRIBUTION OF BILAYER ARMCHAIR GRAPHENE NANORIBBONS |
| title_fullStr |
THE EFFECT OF CRITICAL ELECTRIC FIELDS ON THE ELECTRONIC DISTRIBUTION OF BILAYER ARMCHAIR GRAPHENE NANORIBBONS |
| title_full_unstemmed |
THE EFFECT OF CRITICAL ELECTRIC FIELDS ON THE ELECTRONIC DISTRIBUTION OF BILAYER ARMCHAIR GRAPHENE NANORIBBONS |
| title_sort |
effect of critical electric fields on the electronic distribution of bilayer armchair graphene nanoribbons |
| publisher |
Trường Đại học Đà Lạt |
| publishDate |
2023 |
| url |
https://tckh.dlu.edu.vn/index.php/tckhdhdl/article/view/973 https://scholar.dlu.edu.vn/thuvienso/handle/DLU123456789/114428 |
| _version_ |
1819797621547466752 |