Interactions of fast charged particles with supported two-dimensional electron gas: One-fluid model
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2010
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We investigate the interactions of fast charged particles with a two-dimensional (2D) electron gas (2DEG) supported by an insulating substrate, describing its collective or plasmon excitations by a one-fluid hydrodynamic model with the parameters characteristic of graphene. By linearizing the hydrodynamic equations, we derive general expressions for the induced potential, stopping force and the image force on a particle moving parallel to the 2DEG, as well as for the induced number density per unit area of electrons in the 2DEG. Numerical results are obtained showing the effects of variation in size of the gap between the 2DEG and the SiO(2) substrate on these quantities. It is also found that, when the particle speed exceeds a threshold value for the collective excitations, the oscillatory wake effect develops in the induced number density trailing the particle. (C) 2010 Elsevier B.V. All rights reserved.
Ključne reči:
2D electron gas / Graphene / Stopping force / Image force / Wake effectIzvor:
Physics Letters A, 2010, 374, 13-14, 1527-1533Finansiranje / projekti:
- Modifikacija, sinteza i analiza nanostrukturnih materijala jonskim snopovima, gama zračenjem i vakuumskim deponovanjem (RS-MESTD-MPN2006-2010-141013)
DOI: 10.1016/j.physleta.2010.01.056
ISSN: 0375-9601
WoS: 000276144400024
Scopus: 2-s2.0-77649272550
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VinčaTY - JOUR AU - Radović, Ivan AU - Borka, Duško PY - 2010 UR - https://vinar.vin.bg.ac.rs/handle/123456789/3969 AB - We investigate the interactions of fast charged particles with a two-dimensional (2D) electron gas (2DEG) supported by an insulating substrate, describing its collective or plasmon excitations by a one-fluid hydrodynamic model with the parameters characteristic of graphene. By linearizing the hydrodynamic equations, we derive general expressions for the induced potential, stopping force and the image force on a particle moving parallel to the 2DEG, as well as for the induced number density per unit area of electrons in the 2DEG. Numerical results are obtained showing the effects of variation in size of the gap between the 2DEG and the SiO(2) substrate on these quantities. It is also found that, when the particle speed exceeds a threshold value for the collective excitations, the oscillatory wake effect develops in the induced number density trailing the particle. (C) 2010 Elsevier B.V. All rights reserved. T2 - Physics Letters A T1 - Interactions of fast charged particles with supported two-dimensional electron gas: One-fluid model VL - 374 IS - 13-14 SP - 1527 EP - 1533 DO - 10.1016/j.physleta.2010.01.056 ER -
@article{ author = "Radović, Ivan and Borka, Duško", year = "2010", abstract = "We investigate the interactions of fast charged particles with a two-dimensional (2D) electron gas (2DEG) supported by an insulating substrate, describing its collective or plasmon excitations by a one-fluid hydrodynamic model with the parameters characteristic of graphene. By linearizing the hydrodynamic equations, we derive general expressions for the induced potential, stopping force and the image force on a particle moving parallel to the 2DEG, as well as for the induced number density per unit area of electrons in the 2DEG. Numerical results are obtained showing the effects of variation in size of the gap between the 2DEG and the SiO(2) substrate on these quantities. It is also found that, when the particle speed exceeds a threshold value for the collective excitations, the oscillatory wake effect develops in the induced number density trailing the particle. (C) 2010 Elsevier B.V. All rights reserved.", journal = "Physics Letters A", title = "Interactions of fast charged particles with supported two-dimensional electron gas: One-fluid model", volume = "374", number = "13-14", pages = "1527-1533", doi = "10.1016/j.physleta.2010.01.056" }
Radović, I.,& Borka, D.. (2010). Interactions of fast charged particles with supported two-dimensional electron gas: One-fluid model. in Physics Letters A, 374(13-14), 1527-1533. https://doi.org/10.1016/j.physleta.2010.01.056
Radović I, Borka D. Interactions of fast charged particles with supported two-dimensional electron gas: One-fluid model. in Physics Letters A. 2010;374(13-14):1527-1533. doi:10.1016/j.physleta.2010.01.056 .
Radović, Ivan, Borka, Duško, "Interactions of fast charged particles with supported two-dimensional electron gas: One-fluid model" in Physics Letters A, 374, no. 13-14 (2010):1527-1533, https://doi.org/10.1016/j.physleta.2010.01.056 . .