Interactions of charged particles with double-layer graphene
Апстракт
Nowadays we are witnesses of a development of one promising branch of applied physics, called plasmonics. Especially interesting issue is plasmonics in quasi-two-dimensional (q2D) crystals deposited on various dielectric substrates. Here arise the main questions: how to increase the 2D plasmon propagation length and how to excite 2D plasmon most efficiently. We will focus on describing the interaction between electronic excitations in two graphene layers with phonons in aluminium oxide (Al2O3) slab on which the graphene layers are deposited. Special attention will be paid to explain the hybridization between 2D plasmons and surface (TO) phonons. Because of multiple intersections of 2D plasmons and TO phonons the 2D plasmon moves to lower energies which allows it to be excited by charged particles moving at subthreshold speeds, [1]. We will present the results for wake potential induced by a charged particle which moves parallel to the graphene/dielectric interface. It will b...e shown how various substrates modify the efficiency of particle/plasmon coupling. The electronic excitations in graphene are obtained by using plane waveab initio approach where we have addressed the problem of calculation of EELS spectra in the optical limit ( → 0) and how to avoid intersupercell Coulomb interaction [2].
Извор:
SPIG 2016 : 28th Summer School and International Symposium on the Physics of Ionized Gases : Contributed papers & abstracts of invited lectures, topical invited lectures, progress reports and workshop lectures, 2016, 137-137Издавач:
- University of Belgrade : Faculty of Physics
Напомена:
- 28th Summer School and International Symposium on the Physics of Ionized Gases - SPIG 2016, August 29 - September 2, 2016, Belgrade
Колекције
Институција/група
VinčaTY - CONF AU - Despoja, Vito AU - Radović, Ivan AU - Mišković, Zoran PY - 2016 UR - https://vinar.vin.bg.ac.rs/handle/123456789/12646 AB - Nowadays we are witnesses of a development of one promising branch of applied physics, called plasmonics. Especially interesting issue is plasmonics in quasi-two-dimensional (q2D) crystals deposited on various dielectric substrates. Here arise the main questions: how to increase the 2D plasmon propagation length and how to excite 2D plasmon most efficiently. We will focus on describing the interaction between electronic excitations in two graphene layers with phonons in aluminium oxide (Al2O3) slab on which the graphene layers are deposited. Special attention will be paid to explain the hybridization between 2D plasmons and surface (TO) phonons. Because of multiple intersections of 2D plasmons and TO phonons the 2D plasmon moves to lower energies which allows it to be excited by charged particles moving at subthreshold speeds, [1]. We will present the results for wake potential induced by a charged particle which moves parallel to the graphene/dielectric interface. It will be shown how various substrates modify the efficiency of particle/plasmon coupling. The electronic excitations in graphene are obtained by using plane waveab initio approach where we have addressed the problem of calculation of EELS spectra in the optical limit ( → 0) and how to avoid intersupercell Coulomb interaction [2]. PB - University of Belgrade : Faculty of Physics C3 - SPIG 2016 : 28th Summer School and International Symposium on the Physics of Ionized Gases : Contributed papers & abstracts of invited lectures, topical invited lectures, progress reports and workshop lectures T1 - Interactions of charged particles with double-layer graphene SP - 137 EP - 137 UR - https://hdl.handle.net/21.15107/rcub_vinar_12646 ER -
@conference{ author = "Despoja, Vito and Radović, Ivan and Mišković, Zoran", year = "2016", abstract = "Nowadays we are witnesses of a development of one promising branch of applied physics, called plasmonics. Especially interesting issue is plasmonics in quasi-two-dimensional (q2D) crystals deposited on various dielectric substrates. Here arise the main questions: how to increase the 2D plasmon propagation length and how to excite 2D plasmon most efficiently. We will focus on describing the interaction between electronic excitations in two graphene layers with phonons in aluminium oxide (Al2O3) slab on which the graphene layers are deposited. Special attention will be paid to explain the hybridization between 2D plasmons and surface (TO) phonons. Because of multiple intersections of 2D plasmons and TO phonons the 2D plasmon moves to lower energies which allows it to be excited by charged particles moving at subthreshold speeds, [1]. We will present the results for wake potential induced by a charged particle which moves parallel to the graphene/dielectric interface. It will be shown how various substrates modify the efficiency of particle/plasmon coupling. The electronic excitations in graphene are obtained by using plane waveab initio approach where we have addressed the problem of calculation of EELS spectra in the optical limit ( → 0) and how to avoid intersupercell Coulomb interaction [2].", publisher = "University of Belgrade : Faculty of Physics", journal = "SPIG 2016 : 28th Summer School and International Symposium on the Physics of Ionized Gases : Contributed papers & abstracts of invited lectures, topical invited lectures, progress reports and workshop lectures", title = "Interactions of charged particles with double-layer graphene", pages = "137-137", url = "https://hdl.handle.net/21.15107/rcub_vinar_12646" }
Despoja, V., Radović, I.,& Mišković, Z.. (2016). Interactions of charged particles with double-layer graphene. in SPIG 2016 : 28th Summer School and International Symposium on the Physics of Ionized Gases : Contributed papers & abstracts of invited lectures, topical invited lectures, progress reports and workshop lectures University of Belgrade : Faculty of Physics., 137-137. https://hdl.handle.net/21.15107/rcub_vinar_12646
Despoja V, Radović I, Mišković Z. Interactions of charged particles with double-layer graphene. in SPIG 2016 : 28th Summer School and International Symposium on the Physics of Ionized Gases : Contributed papers & abstracts of invited lectures, topical invited lectures, progress reports and workshop lectures. 2016;:137-137. https://hdl.handle.net/21.15107/rcub_vinar_12646 .
Despoja, Vito, Radović, Ivan, Mišković, Zoran, "Interactions of charged particles with double-layer graphene" in SPIG 2016 : 28th Summer School and International Symposium on the Physics of Ionized Gases : Contributed papers & abstracts of invited lectures, topical invited lectures, progress reports and workshop lectures (2016):137-137, https://hdl.handle.net/21.15107/rcub_vinar_12646 .