DISPERSION RELATIONS IN BILAYER GRAPHENE AT FINITE TEMPERATURE
It is well-known that material technology is considered as one of the scientific fields attracting a lot of attention from scientists. Recently, graphene, a perfect two-dimensional structure, has attracted a large amount of interest from researchers due to its unique properties and possible applicat...
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| Autor*in: |
Nguyen Van Men [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2021 |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
In: Tạp chí Khoa học Đại học Đà Lạt - Dalat University, 2018, 11(2021), 4 |
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| Übergeordnetes Werk: |
volume:11 ; year:2021 ; number:4 |
| Links: |
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| DOI / URN: |
10.37569/DalatUniversity.11.4.882(2021) |
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DOAJ065361385 |
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| 520 | |a It is well-known that material technology is considered as one of the scientific fields attracting a lot of attention from scientists. Recently, graphene, a perfect two-dimensional structure, has attracted a large amount of interest from researchers due to its unique properties and possible applications in a variety of technological fields. The dispersion relations in graphene demonstrate that this material can be used to create plasmonic devices with potentially more features and less energy consumption than recent semiconductors. This paper calculates the dispersion relations in a bilayer graphene structure at finite temperatures using the random-phase approximation. The numerical results show that as temperature increases from zero, the plasmon frequency decreases slightly near the Dirac points and then increases noticeably. In large wave vector regions, the plasmon frequency behaves as an increasing function of temperature. The contribution of carrier density to plasmon frequency in the bilayer graphene system diminishes when temperature effects are taken into account. We observed that temperature significantly affects the dispersion relations in bilayer graphene systems; therefore, this factor should not be neglected in efforts to improve models or in comparisons with experimental results. | ||
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10.37569/DalatUniversity.11.4.882(2021) doi (DE-627)DOAJ065361385 (DE-599)DOAJ44bb20c3f0ca48ae9a5677c848de6d11 DE-627 ger DE-627 rakwb eng Nguyen Van Men verfasserin aut DISPERSION RELATIONS IN BILAYER GRAPHENE AT FINITE TEMPERATURE 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier It is well-known that material technology is considered as one of the scientific fields attracting a lot of attention from scientists. Recently, graphene, a perfect two-dimensional structure, has attracted a large amount of interest from researchers due to its unique properties and possible applications in a variety of technological fields. The dispersion relations in graphene demonstrate that this material can be used to create plasmonic devices with potentially more features and less energy consumption than recent semiconductors. This paper calculates the dispersion relations in a bilayer graphene structure at finite temperatures using the random-phase approximation. The numerical results show that as temperature increases from zero, the plasmon frequency decreases slightly near the Dirac points and then increases noticeably. In large wave vector regions, the plasmon frequency behaves as an increasing function of temperature. The contribution of carrier density to plasmon frequency in the bilayer graphene system diminishes when temperature effects are taken into account. We observed that temperature significantly affects the dispersion relations in bilayer graphene systems; therefore, this factor should not be neglected in efforts to improve models or in comparisons with experimental results. Bilayer graphene Dispersion relations Dynamical dielectric function Finite temperature Random-phase approximation. General Works A In Tạp chí Khoa học Đại học Đà Lạt Dalat University, 2018 11(2021), 4 (DE-627)1760638110 0866787X nnns volume:11 year:2021 number:4 https://doi.org/10.37569/DalatUniversity.11.4.882(2021) kostenfrei https://doaj.org/article/44bb20c3f0ca48ae9a5677c848de6d11 kostenfrei https://tckh.dlu.edu.vn/index.php/tckhdhdl/article/view/882 kostenfrei https://doaj.org/toc/0866-787X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ AR 11 2021 4 |
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10.37569/DalatUniversity.11.4.882(2021) doi (DE-627)DOAJ065361385 (DE-599)DOAJ44bb20c3f0ca48ae9a5677c848de6d11 DE-627 ger DE-627 rakwb eng Nguyen Van Men verfasserin aut DISPERSION RELATIONS IN BILAYER GRAPHENE AT FINITE TEMPERATURE 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier It is well-known that material technology is considered as one of the scientific fields attracting a lot of attention from scientists. Recently, graphene, a perfect two-dimensional structure, has attracted a large amount of interest from researchers due to its unique properties and possible applications in a variety of technological fields. The dispersion relations in graphene demonstrate that this material can be used to create plasmonic devices with potentially more features and less energy consumption than recent semiconductors. This paper calculates the dispersion relations in a bilayer graphene structure at finite temperatures using the random-phase approximation. The numerical results show that as temperature increases from zero, the plasmon frequency decreases slightly near the Dirac points and then increases noticeably. In large wave vector regions, the plasmon frequency behaves as an increasing function of temperature. The contribution of carrier density to plasmon frequency in the bilayer graphene system diminishes when temperature effects are taken into account. We observed that temperature significantly affects the dispersion relations in bilayer graphene systems; therefore, this factor should not be neglected in efforts to improve models or in comparisons with experimental results. Bilayer graphene Dispersion relations Dynamical dielectric function Finite temperature Random-phase approximation. General Works A In Tạp chí Khoa học Đại học Đà Lạt Dalat University, 2018 11(2021), 4 (DE-627)1760638110 0866787X nnns volume:11 year:2021 number:4 https://doi.org/10.37569/DalatUniversity.11.4.882(2021) kostenfrei https://doaj.org/article/44bb20c3f0ca48ae9a5677c848de6d11 kostenfrei https://tckh.dlu.edu.vn/index.php/tckhdhdl/article/view/882 kostenfrei https://doaj.org/toc/0866-787X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ AR 11 2021 4 |
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10.37569/DalatUniversity.11.4.882(2021) doi (DE-627)DOAJ065361385 (DE-599)DOAJ44bb20c3f0ca48ae9a5677c848de6d11 DE-627 ger DE-627 rakwb eng Nguyen Van Men verfasserin aut DISPERSION RELATIONS IN BILAYER GRAPHENE AT FINITE TEMPERATURE 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier It is well-known that material technology is considered as one of the scientific fields attracting a lot of attention from scientists. Recently, graphene, a perfect two-dimensional structure, has attracted a large amount of interest from researchers due to its unique properties and possible applications in a variety of technological fields. The dispersion relations in graphene demonstrate that this material can be used to create plasmonic devices with potentially more features and less energy consumption than recent semiconductors. This paper calculates the dispersion relations in a bilayer graphene structure at finite temperatures using the random-phase approximation. The numerical results show that as temperature increases from zero, the plasmon frequency decreases slightly near the Dirac points and then increases noticeably. In large wave vector regions, the plasmon frequency behaves as an increasing function of temperature. The contribution of carrier density to plasmon frequency in the bilayer graphene system diminishes when temperature effects are taken into account. We observed that temperature significantly affects the dispersion relations in bilayer graphene systems; therefore, this factor should not be neglected in efforts to improve models or in comparisons with experimental results. Bilayer graphene Dispersion relations Dynamical dielectric function Finite temperature Random-phase approximation. General Works A In Tạp chí Khoa học Đại học Đà Lạt Dalat University, 2018 11(2021), 4 (DE-627)1760638110 0866787X nnns volume:11 year:2021 number:4 https://doi.org/10.37569/DalatUniversity.11.4.882(2021) kostenfrei https://doaj.org/article/44bb20c3f0ca48ae9a5677c848de6d11 kostenfrei https://tckh.dlu.edu.vn/index.php/tckhdhdl/article/view/882 kostenfrei https://doaj.org/toc/0866-787X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ AR 11 2021 4 |
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10.37569/DalatUniversity.11.4.882(2021) doi (DE-627)DOAJ065361385 (DE-599)DOAJ44bb20c3f0ca48ae9a5677c848de6d11 DE-627 ger DE-627 rakwb eng Nguyen Van Men verfasserin aut DISPERSION RELATIONS IN BILAYER GRAPHENE AT FINITE TEMPERATURE 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier It is well-known that material technology is considered as one of the scientific fields attracting a lot of attention from scientists. Recently, graphene, a perfect two-dimensional structure, has attracted a large amount of interest from researchers due to its unique properties and possible applications in a variety of technological fields. The dispersion relations in graphene demonstrate that this material can be used to create plasmonic devices with potentially more features and less energy consumption than recent semiconductors. This paper calculates the dispersion relations in a bilayer graphene structure at finite temperatures using the random-phase approximation. The numerical results show that as temperature increases from zero, the plasmon frequency decreases slightly near the Dirac points and then increases noticeably. In large wave vector regions, the plasmon frequency behaves as an increasing function of temperature. The contribution of carrier density to plasmon frequency in the bilayer graphene system diminishes when temperature effects are taken into account. We observed that temperature significantly affects the dispersion relations in bilayer graphene systems; therefore, this factor should not be neglected in efforts to improve models or in comparisons with experimental results. Bilayer graphene Dispersion relations Dynamical dielectric function Finite temperature Random-phase approximation. General Works A In Tạp chí Khoa học Đại học Đà Lạt Dalat University, 2018 11(2021), 4 (DE-627)1760638110 0866787X nnns volume:11 year:2021 number:4 https://doi.org/10.37569/DalatUniversity.11.4.882(2021) kostenfrei https://doaj.org/article/44bb20c3f0ca48ae9a5677c848de6d11 kostenfrei https://tckh.dlu.edu.vn/index.php/tckhdhdl/article/view/882 kostenfrei https://doaj.org/toc/0866-787X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ AR 11 2021 4 |
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10.37569/DalatUniversity.11.4.882(2021) doi (DE-627)DOAJ065361385 (DE-599)DOAJ44bb20c3f0ca48ae9a5677c848de6d11 DE-627 ger DE-627 rakwb eng Nguyen Van Men verfasserin aut DISPERSION RELATIONS IN BILAYER GRAPHENE AT FINITE TEMPERATURE 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier It is well-known that material technology is considered as one of the scientific fields attracting a lot of attention from scientists. Recently, graphene, a perfect two-dimensional structure, has attracted a large amount of interest from researchers due to its unique properties and possible applications in a variety of technological fields. The dispersion relations in graphene demonstrate that this material can be used to create plasmonic devices with potentially more features and less energy consumption than recent semiconductors. This paper calculates the dispersion relations in a bilayer graphene structure at finite temperatures using the random-phase approximation. The numerical results show that as temperature increases from zero, the plasmon frequency decreases slightly near the Dirac points and then increases noticeably. In large wave vector regions, the plasmon frequency behaves as an increasing function of temperature. The contribution of carrier density to plasmon frequency in the bilayer graphene system diminishes when temperature effects are taken into account. We observed that temperature significantly affects the dispersion relations in bilayer graphene systems; therefore, this factor should not be neglected in efforts to improve models or in comparisons with experimental results. Bilayer graphene Dispersion relations Dynamical dielectric function Finite temperature Random-phase approximation. General Works A In Tạp chí Khoa học Đại học Đà Lạt Dalat University, 2018 11(2021), 4 (DE-627)1760638110 0866787X nnns volume:11 year:2021 number:4 https://doi.org/10.37569/DalatUniversity.11.4.882(2021) kostenfrei https://doaj.org/article/44bb20c3f0ca48ae9a5677c848de6d11 kostenfrei https://tckh.dlu.edu.vn/index.php/tckhdhdl/article/view/882 kostenfrei https://doaj.org/toc/0866-787X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ AR 11 2021 4 |
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DISPERSION RELATIONS IN BILAYER GRAPHENE AT FINITE TEMPERATURE |
| abstract |
It is well-known that material technology is considered as one of the scientific fields attracting a lot of attention from scientists. Recently, graphene, a perfect two-dimensional structure, has attracted a large amount of interest from researchers due to its unique properties and possible applications in a variety of technological fields. The dispersion relations in graphene demonstrate that this material can be used to create plasmonic devices with potentially more features and less energy consumption than recent semiconductors. This paper calculates the dispersion relations in a bilayer graphene structure at finite temperatures using the random-phase approximation. The numerical results show that as temperature increases from zero, the plasmon frequency decreases slightly near the Dirac points and then increases noticeably. In large wave vector regions, the plasmon frequency behaves as an increasing function of temperature. The contribution of carrier density to plasmon frequency in the bilayer graphene system diminishes when temperature effects are taken into account. We observed that temperature significantly affects the dispersion relations in bilayer graphene systems; therefore, this factor should not be neglected in efforts to improve models or in comparisons with experimental results. |
| abstractGer |
It is well-known that material technology is considered as one of the scientific fields attracting a lot of attention from scientists. Recently, graphene, a perfect two-dimensional structure, has attracted a large amount of interest from researchers due to its unique properties and possible applications in a variety of technological fields. The dispersion relations in graphene demonstrate that this material can be used to create plasmonic devices with potentially more features and less energy consumption than recent semiconductors. This paper calculates the dispersion relations in a bilayer graphene structure at finite temperatures using the random-phase approximation. The numerical results show that as temperature increases from zero, the plasmon frequency decreases slightly near the Dirac points and then increases noticeably. In large wave vector regions, the plasmon frequency behaves as an increasing function of temperature. The contribution of carrier density to plasmon frequency in the bilayer graphene system diminishes when temperature effects are taken into account. We observed that temperature significantly affects the dispersion relations in bilayer graphene systems; therefore, this factor should not be neglected in efforts to improve models or in comparisons with experimental results. |
| abstract_unstemmed |
It is well-known that material technology is considered as one of the scientific fields attracting a lot of attention from scientists. Recently, graphene, a perfect two-dimensional structure, has attracted a large amount of interest from researchers due to its unique properties and possible applications in a variety of technological fields. The dispersion relations in graphene demonstrate that this material can be used to create plasmonic devices with potentially more features and less energy consumption than recent semiconductors. This paper calculates the dispersion relations in a bilayer graphene structure at finite temperatures using the random-phase approximation. The numerical results show that as temperature increases from zero, the plasmon frequency decreases slightly near the Dirac points and then increases noticeably. In large wave vector regions, the plasmon frequency behaves as an increasing function of temperature. The contribution of carrier density to plasmon frequency in the bilayer graphene system diminishes when temperature effects are taken into account. We observed that temperature significantly affects the dispersion relations in bilayer graphene systems; therefore, this factor should not be neglected in efforts to improve models or in comparisons with experimental results. |
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DISPERSION RELATIONS IN BILAYER GRAPHENE AT FINITE TEMPERATURE |
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https://doi.org/10.37569/DalatUniversity.11.4.882(2021) https://doaj.org/article/44bb20c3f0ca48ae9a5677c848de6d11 https://tckh.dlu.edu.vn/index.php/tckhdhdl/article/view/882 https://doaj.org/toc/0866-787X |
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10.37569/DalatUniversity.11.4.882(2021) |
| up_date |
2024-07-03T14:21:17.793Z |
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Recently, graphene, a perfect two-dimensional structure, has attracted a large amount of interest from researchers due to its unique properties and possible applications in a variety of technological fields. The dispersion relations in graphene demonstrate that this material can be used to create plasmonic devices with potentially more features and less energy consumption than recent semiconductors. This paper calculates the dispersion relations in a bilayer graphene structure at finite temperatures using the random-phase approximation. The numerical results show that as temperature increases from zero, the plasmon frequency decreases slightly near the Dirac points and then increases noticeably. In large wave vector regions, the plasmon frequency behaves as an increasing function of temperature. The contribution of carrier density to plasmon frequency in the bilayer graphene system diminishes when temperature effects are taken into account. 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