Interactions of slowly moving charges with graphene: The role of substrate phonons
Abstract
We study dynamic polarization of single-layer graphene lying on a strongly polar substrate, such as SiC, induced by an external charged particle that moves slowly parallel to graphene. Calculations of the total electrostatic potential in the graphene plane, as well as of the stopping and image forces on the external particle are performed by means of graphenes dielectric function within the random phase approximation. We find that the excitation of surface phonons in the substrate may exert quite strong influences on the wake effect in the potential at low particle speeds, as well as on the magnitudes of both forces at high particle speeds. (C) 2011 Elsevier B.V. All rights reserved.
Keywords:
Graphene / Wake effect / Stopping force / Image interaction / Surface phononsSource:
Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 2012, 279, 165-168Funding / projects:
- Functional, Functionalized and Advanced Nanomaterials (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45005)
Note:
- 5th International Conference on Elementary Processes in Atomic Systems (CEPAS), Jun 21-25, 2011, Belgrade, Serbia
DOI: 10.1016/j.nimb.2011.10.028
ISSN: 0168-583X; 1872-9584
WoS: 000303637500039
Scopus: 2-s2.0-84859595248
Collections
Institution/Community
VinčaTY - JOUR AU - Radović, Ivan AU - Borka Jovanović, Vesna AU - Borka, Duško AU - Mišković, Zoran L. PY - 2012 UR - https://vinar.vin.bg.ac.rs/handle/123456789/6958 AB - We study dynamic polarization of single-layer graphene lying on a strongly polar substrate, such as SiC, induced by an external charged particle that moves slowly parallel to graphene. Calculations of the total electrostatic potential in the graphene plane, as well as of the stopping and image forces on the external particle are performed by means of graphenes dielectric function within the random phase approximation. We find that the excitation of surface phonons in the substrate may exert quite strong influences on the wake effect in the potential at low particle speeds, as well as on the magnitudes of both forces at high particle speeds. (C) 2011 Elsevier B.V. All rights reserved. T2 - Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms T1 - Interactions of slowly moving charges with graphene: The role of substrate phonons VL - 279 SP - 165 EP - 168 DO - 10.1016/j.nimb.2011.10.028 ER -
@article{ author = "Radović, Ivan and Borka Jovanović, Vesna and Borka, Duško and Mišković, Zoran L.", year = "2012", abstract = "We study dynamic polarization of single-layer graphene lying on a strongly polar substrate, such as SiC, induced by an external charged particle that moves slowly parallel to graphene. Calculations of the total electrostatic potential in the graphene plane, as well as of the stopping and image forces on the external particle are performed by means of graphenes dielectric function within the random phase approximation. We find that the excitation of surface phonons in the substrate may exert quite strong influences on the wake effect in the potential at low particle speeds, as well as on the magnitudes of both forces at high particle speeds. (C) 2011 Elsevier B.V. All rights reserved.", journal = "Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms", title = "Interactions of slowly moving charges with graphene: The role of substrate phonons", volume = "279", pages = "165-168", doi = "10.1016/j.nimb.2011.10.028" }
Radović, I., Borka Jovanović, V., Borka, D.,& Mišković, Z. L.. (2012). Interactions of slowly moving charges with graphene: The role of substrate phonons. in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 279, 165-168. https://doi.org/10.1016/j.nimb.2011.10.028
Radović I, Borka Jovanović V, Borka D, Mišković ZL. Interactions of slowly moving charges with graphene: The role of substrate phonons. in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms. 2012;279:165-168. doi:10.1016/j.nimb.2011.10.028 .
Radović, Ivan, Borka Jovanović, Vesna, Borka, Duško, Mišković, Zoran L., "Interactions of slowly moving charges with graphene: The role of substrate phonons" in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 279 (2012):165-168, https://doi.org/10.1016/j.nimb.2011.10.028 . .