Stopping and image forces acting on a charged particle moving near a graphene-Al2O3-graphene heterostructure
Само за регистроване кориснике
2022
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
We study the impact of plasmon-phonon hybridization on the stopping and image forces acting on a charged particle moving parallel to a graphene-Al2O3-graphene sandwichlike composite system by considering a broad domain in the parameter space. The effective dielectric function of the system is obtained using two descriptions of the electronic response of doped graphene: an ab initio method based on the time-dependent density functional theory calculations and an analytical expression based on the massless Dirac fermion (MDF) approximation for graphene π bands. It is found that the main discrepancies between the two methods come from the high-energy interband electron transitions, which are included in the ab initio method but not in the MDF method. Special attention is paid to the regime of low-particle speeds, where the MDF method compares well with the ab initio method, but the modeling is sensitive to the effects of finite temperature and the treatment of phenomenological damping. It... is observed at low particle speeds that both forces exhibit an interesting interplay between the hybrid modes of the phononic type and the continuum of the intraband electron-hole excitations in graphene. Furthermore, the effects of the lowest-energy antisymmetric modes, which exhibit acoustic dispersions at long wavelengths in a system with equally doped graphene layers, are exposed in calculations of the stopping force on a co-moving pair of incident particles with opposite charges that are symmetrically positioned around the target system.
Извор:
Physical Review B, 2022, 106, 11, 115430-Финансирање / пројекти:
- Ministry of Education, Science and Technological Development of the Republic of Serbia and the Serbia-Croatia bilateral project [Grant No. 337-00-205/2019-09/28]
- COST Action [CA19118EsSENce]
- Croatian Science Foundation [Grant No. IP-2020-02-5556]
- European Regional Development Fund for the QuantiXLie Centre of Excellence [Grant No. KK.01.1.1.01.0004]
- Natural Sciences and Engineering Research Council of Canada [Grant No. 2016-03689]
Колекције
Институција/група
VinčaTY - JOUR AU - Kalinić, Ana AU - Despoja, Vito AU - Radović, Ivan AU - Karbunar, Lazar AU - Mišković, Zoran L. PY - 2022 UR - https://vinar.vin.bg.ac.rs/handle/123456789/10453 AB - We study the impact of plasmon-phonon hybridization on the stopping and image forces acting on a charged particle moving parallel to a graphene-Al2O3-graphene sandwichlike composite system by considering a broad domain in the parameter space. The effective dielectric function of the system is obtained using two descriptions of the electronic response of doped graphene: an ab initio method based on the time-dependent density functional theory calculations and an analytical expression based on the massless Dirac fermion (MDF) approximation for graphene π bands. It is found that the main discrepancies between the two methods come from the high-energy interband electron transitions, which are included in the ab initio method but not in the MDF method. Special attention is paid to the regime of low-particle speeds, where the MDF method compares well with the ab initio method, but the modeling is sensitive to the effects of finite temperature and the treatment of phenomenological damping. It is observed at low particle speeds that both forces exhibit an interesting interplay between the hybrid modes of the phononic type and the continuum of the intraband electron-hole excitations in graphene. Furthermore, the effects of the lowest-energy antisymmetric modes, which exhibit acoustic dispersions at long wavelengths in a system with equally doped graphene layers, are exposed in calculations of the stopping force on a co-moving pair of incident particles with opposite charges that are symmetrically positioned around the target system. T2 - Physical Review B T1 - Stopping and image forces acting on a charged particle moving near a graphene-Al2O3-graphene heterostructure VL - 106 IS - 11 SP - 115430 DO - 10.1103/PhysRevB.106.115430 ER -
@article{ author = "Kalinić, Ana and Despoja, Vito and Radović, Ivan and Karbunar, Lazar and Mišković, Zoran L.", year = "2022", abstract = "We study the impact of plasmon-phonon hybridization on the stopping and image forces acting on a charged particle moving parallel to a graphene-Al2O3-graphene sandwichlike composite system by considering a broad domain in the parameter space. The effective dielectric function of the system is obtained using two descriptions of the electronic response of doped graphene: an ab initio method based on the time-dependent density functional theory calculations and an analytical expression based on the massless Dirac fermion (MDF) approximation for graphene π bands. It is found that the main discrepancies between the two methods come from the high-energy interband electron transitions, which are included in the ab initio method but not in the MDF method. Special attention is paid to the regime of low-particle speeds, where the MDF method compares well with the ab initio method, but the modeling is sensitive to the effects of finite temperature and the treatment of phenomenological damping. It is observed at low particle speeds that both forces exhibit an interesting interplay between the hybrid modes of the phononic type and the continuum of the intraband electron-hole excitations in graphene. Furthermore, the effects of the lowest-energy antisymmetric modes, which exhibit acoustic dispersions at long wavelengths in a system with equally doped graphene layers, are exposed in calculations of the stopping force on a co-moving pair of incident particles with opposite charges that are symmetrically positioned around the target system.", journal = "Physical Review B", title = "Stopping and image forces acting on a charged particle moving near a graphene-Al2O3-graphene heterostructure", volume = "106", number = "11", pages = "115430", doi = "10.1103/PhysRevB.106.115430" }
Kalinić, A., Despoja, V., Radović, I., Karbunar, L.,& Mišković, Z. L.. (2022). Stopping and image forces acting on a charged particle moving near a graphene-Al2O3-graphene heterostructure. in Physical Review B, 106(11), 115430. https://doi.org/10.1103/PhysRevB.106.115430
Kalinić A, Despoja V, Radović I, Karbunar L, Mišković ZL. Stopping and image forces acting on a charged particle moving near a graphene-Al2O3-graphene heterostructure. in Physical Review B. 2022;106(11):115430. doi:10.1103/PhysRevB.106.115430 .
Kalinić, Ana, Despoja, Vito, Radović, Ivan, Karbunar, Lazar, Mišković, Zoran L., "Stopping and image forces acting on a charged particle moving near a graphene-Al2O3-graphene heterostructure" in Physical Review B, 106, no. 11 (2022):115430, https://doi.org/10.1103/PhysRevB.106.115430 . .