Wake effect in interactions of ions with graphene-sapphire-graphene structure
Апстракт
In our recent publication1 we have 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 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 sapphire (aluminum oxide, Al2O3) layer, and the doping density (i.e., Fermi energy) of graphene. In this work we present a detailed study of the effects due to variations of all those parameters in the case of the wake potential produced by charged particle moving parallel to the graphene-Al2O3- graphene composite system, by using the dynamic polarization function of graphene within the random phase approximation for its π electrons described as Dirac’s fermions and by using a local dielectric function for the sapphire layer2 . For the velocity of the charged particle below the threshold for excita...tions of the Dirac plasmon in graphene, given by its Fermi velocity vF, strong effects are observed due to variation of the particle distance, while for the velocity of the charged particle above vF strong effects are observed due to varying the thickness of the Al2O3 layer, as well as due to graphene doping.
Извор:
COST Action CA15107 : Final Multicomp meeting : Book of Abstracts, 2020, 33-33Издавач:
- Gradec, Slovenija : Fakulteta za tehnologijo polimerov
Финансирање / пројекти:
- Ministry of Education, Science and Technological Development of the Republic of Serbia, Serbia-Croatia bilateral project [Grant No. 337-00-205/2019-09/28]
- Croatian Government and European Union through the European Regional Development Fund - the Competitiveness and Cohesion Operational Programme [Grant No. KK.01.1.1.01.0004]
- Natural Sciences and Engineering Research Council of Canada [RGPIN-2016- 03689]
Колекције
Институција/група
VinčaTY - CONF AU - Kalinić, Ana AU - Radović, Ivan AU - Karbunar, Lazar AU - Despoja, Vito AU - Mišković, Zoran L. PY - 2020 UR - https://vinar.vin.bg.ac.rs/handle/123456789/12676 AB - In our recent publication1 we have 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 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 sapphire (aluminum oxide, Al2O3) layer, and the doping density (i.e., Fermi energy) of graphene. In this work we present a detailed study of the effects due to variations of all those parameters in the case of the wake potential produced by charged particle moving parallel to the graphene-Al2O3- graphene composite system, by using the dynamic polarization function of graphene within the random phase approximation for its π electrons described as Dirac’s fermions and by using a local dielectric function for the sapphire layer2 . For the velocity of the charged particle below the threshold for excitations of the Dirac plasmon in graphene, given by its Fermi velocity vF, strong effects are observed due to variation of the particle distance, while for the velocity of the charged particle above vF strong effects are observed due to varying the thickness of the Al2O3 layer, as well as due to graphene doping. PB - Gradec, Slovenija : Fakulteta za tehnologijo polimerov C3 - COST Action CA15107 : Final Multicomp meeting : Book of Abstracts T1 - Wake effect in interactions of ions with graphene-sapphire-graphene structure SP - 33 EP - 33 UR - https://hdl.handle.net/21.15107/rcub_vinar_12676 ER -
@conference{ author = "Kalinić, Ana and Radović, Ivan and Karbunar, Lazar and Despoja, Vito and Mišković, Zoran L.", year = "2020", abstract = "In our recent publication1 we have 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 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 sapphire (aluminum oxide, Al2O3) layer, and the doping density (i.e., Fermi energy) of graphene. In this work we present a detailed study of the effects due to variations of all those parameters in the case of the wake potential produced by charged particle moving parallel to the graphene-Al2O3- graphene composite system, by using the dynamic polarization function of graphene within the random phase approximation for its π electrons described as Dirac’s fermions and by using a local dielectric function for the sapphire layer2 . For the velocity of the charged particle below the threshold for excitations of the Dirac plasmon in graphene, given by its Fermi velocity vF, strong effects are observed due to variation of the particle distance, while for the velocity of the charged particle above vF strong effects are observed due to varying the thickness of the Al2O3 layer, as well as due to graphene doping.", publisher = "Gradec, Slovenija : Fakulteta za tehnologijo polimerov", journal = "COST Action CA15107 : Final Multicomp meeting : Book of Abstracts", title = "Wake effect in interactions of ions with graphene-sapphire-graphene structure", pages = "33-33", url = "https://hdl.handle.net/21.15107/rcub_vinar_12676" }
Kalinić, A., Radović, I., Karbunar, L., Despoja, V.,& Mišković, Z. L.. (2020). Wake effect in interactions of ions with graphene-sapphire-graphene structure. in COST Action CA15107 : Final Multicomp meeting : Book of Abstracts Gradec, Slovenija : Fakulteta za tehnologijo polimerov., 33-33. https://hdl.handle.net/21.15107/rcub_vinar_12676
Kalinić A, Radović I, Karbunar L, Despoja V, Mišković ZL. Wake effect in interactions of ions with graphene-sapphire-graphene structure. in COST Action CA15107 : Final Multicomp meeting : Book of Abstracts. 2020;:33-33. https://hdl.handle.net/21.15107/rcub_vinar_12676 .
Kalinić, Ana, Radović, Ivan, Karbunar, Lazar, Despoja, Vito, Mišković, Zoran L., "Wake effect in interactions of ions with graphene-sapphire-graphene structure" in COST Action CA15107 : Final Multicomp meeting : Book of Abstracts (2020):33-33, https://hdl.handle.net/21.15107/rcub_vinar_12676 .