Wake Potential in Graphene-insulator-graphene Heterostructure: the Role of Graphene-insulator Distance
Само за регистроване кориснике
2023
Конференцијски прилог (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
In our previous publication [1] we studied the wake potential induced by an external charged particle that moves parallel to various sy1 -Al2O3-sy2 composites, where syi (with i=1,2) may be vacuum, pristine (undoped) graphene, or doped graphene. Several important parameters were fixed at their respective typical values: the distance of the charged particle from the closest surface, the thickness of the Al2O3 layer, and the doping density of graphene. In our recent publication [2] we presented a detailed study of the effects due to variations of all those parameters in the case of the wake potential produced by the charged particle moving parallel to the graphene-Al2O3-graphene composite system. In both mentioned publications we assumed a zero gap between graphene and insulator to simplify calculations. In this work we assign for the first time a finite gap size between graphene and insulator, and vary the speed of the projectile moving parallel to the structure and the particle distanc...e. Using the Dyson-Schwinger equation [3] we recalculate the wake potential in the graphene-insulator-graphene heterostructure and study the effects of the graphene-insulator distance. The polarization functions of graphene sheets are obtained using two approaches within the random phase approximation [3]: an ab initio method and a method based on the massless Dirac fermion approximation. The dynamic response of the insulator layer is described by a dielectric function consisting of several Lorentzian terms.
Извор:
COST 18234 Meeting in Israel : International Conference on Development of Nanocrystal Materials Through Computational Modelling : Posters abstracts, 2023, 5-5Колекције
Институција/група
VinčaTY - CONF AU - Kalinić, Ana AU - Radović, Ivan AU - Despoja, Vito AU - Karbunar, Lazar AU - Mišković, Zoran PY - 2023 UR - https://vinar.vin.bg.ac.rs/handle/123456789/12074 AB - In our previous publication [1] we studied the wake potential induced by an external charged particle that moves parallel to various sy1 -Al2O3-sy2 composites, where syi (with i=1,2) may be vacuum, pristine (undoped) graphene, or doped graphene. Several important parameters were fixed at their respective typical values: the distance of the charged particle from the closest surface, the thickness of the Al2O3 layer, and the doping density of graphene. In our recent publication [2] we presented a detailed study of the effects due to variations of all those parameters in the case of the wake potential produced by the charged particle moving parallel to the graphene-Al2O3-graphene composite system. In both mentioned publications we assumed a zero gap between graphene and insulator to simplify calculations. In this work we assign for the first time a finite gap size between graphene and insulator, and vary the speed of the projectile moving parallel to the structure and the particle distance. Using the Dyson-Schwinger equation [3] we recalculate the wake potential in the graphene-insulator-graphene heterostructure and study the effects of the graphene-insulator distance. The polarization functions of graphene sheets are obtained using two approaches within the random phase approximation [3]: an ab initio method and a method based on the massless Dirac fermion approximation. The dynamic response of the insulator layer is described by a dielectric function consisting of several Lorentzian terms. C3 - COST 18234 Meeting in Israel : International Conference on Development of Nanocrystal Materials Through Computational Modelling : Posters abstracts T1 - Wake Potential in Graphene-insulator-graphene Heterostructure: the Role of Graphene-insulator Distance SP - 5 EP - 5 UR - https://hdl.handle.net/21.15107/rcub_vinar_12074 ER -
@conference{ author = "Kalinić, Ana and Radović, Ivan and Despoja, Vito and Karbunar, Lazar and Mišković, Zoran", year = "2023", abstract = "In our previous publication [1] we studied the wake potential induced by an external charged particle that moves parallel to various sy1 -Al2O3-sy2 composites, where syi (with i=1,2) may be vacuum, pristine (undoped) graphene, or doped graphene. Several important parameters were fixed at their respective typical values: the distance of the charged particle from the closest surface, the thickness of the Al2O3 layer, and the doping density of graphene. In our recent publication [2] we presented a detailed study of the effects due to variations of all those parameters in the case of the wake potential produced by the charged particle moving parallel to the graphene-Al2O3-graphene composite system. In both mentioned publications we assumed a zero gap between graphene and insulator to simplify calculations. In this work we assign for the first time a finite gap size between graphene and insulator, and vary the speed of the projectile moving parallel to the structure and the particle distance. Using the Dyson-Schwinger equation [3] we recalculate the wake potential in the graphene-insulator-graphene heterostructure and study the effects of the graphene-insulator distance. The polarization functions of graphene sheets are obtained using two approaches within the random phase approximation [3]: an ab initio method and a method based on the massless Dirac fermion approximation. The dynamic response of the insulator layer is described by a dielectric function consisting of several Lorentzian terms.", journal = "COST 18234 Meeting in Israel : International Conference on Development of Nanocrystal Materials Through Computational Modelling : Posters abstracts", title = "Wake Potential in Graphene-insulator-graphene Heterostructure: the Role of Graphene-insulator Distance", pages = "5-5", url = "https://hdl.handle.net/21.15107/rcub_vinar_12074" }
Kalinić, A., Radović, I., Despoja, V., Karbunar, L.,& Mišković, Z.. (2023). Wake Potential in Graphene-insulator-graphene Heterostructure: the Role of Graphene-insulator Distance. in COST 18234 Meeting in Israel : International Conference on Development of Nanocrystal Materials Through Computational Modelling : Posters abstracts, 5-5. https://hdl.handle.net/21.15107/rcub_vinar_12074
Kalinić A, Radović I, Despoja V, Karbunar L, Mišković Z. Wake Potential in Graphene-insulator-graphene Heterostructure: the Role of Graphene-insulator Distance. in COST 18234 Meeting in Israel : International Conference on Development of Nanocrystal Materials Through Computational Modelling : Posters abstracts. 2023;:5-5. https://hdl.handle.net/21.15107/rcub_vinar_12074 .
Kalinić, Ana, Radović, Ivan, Despoja, Vito, Karbunar, Lazar, Mišković, Zoran, "Wake Potential in Graphene-insulator-graphene Heterostructure: the Role of Graphene-insulator Distance" in COST 18234 Meeting in Israel : International Conference on Development of Nanocrystal Materials Through Computational Modelling : Posters abstracts (2023):5-5, https://hdl.handle.net/21.15107/rcub_vinar_12074 .