Zobrazeno 1 - 10
of 121
pro vyhledávání: '"Ihnatsenka, S."'
Autor:
Ihnatsenka, S.
Quantum-mechanical calculations of electron magnetotransport in graphene Fabry-P\'{e}rot interferometers are presented with a focus on the role of spatial structure of edge channels. For an interferometer that is made by removing carbon atoms, which
Externí odkaz:
http://arxiv.org/abs/2210.15036
Autor:
Ihnatsenka, S.
Publikováno v:
Phys. Rev. B 106, 115408 (2022)
Quantum-mechanical calculations of electron magneto-transport in ideal graphene nanoribbons are presented. In noninteracting theory, it is predicted that an ideal ribbon that is attached to wide leads should reveal Fabry-Perot conductance oscillation
Externí odkaz:
http://arxiv.org/abs/2206.03553
Autor:
Ihnatsenka, S.
Publikováno v:
ACS Phys. Chem Au 2, 118 (2022)
A model of charge hopping transport that accounts for anisotropy of localized states and Coulomb interaction between charges is proposed. For the anisotropic localized states the degree of orientation relates exponentially to the ratio of conductivit
Externí odkaz:
http://arxiv.org/abs/2108.06097
Autor:
Ihnatsenka, S.
Publikováno v:
Phys. Rev. B 94, 195202 (2016)
Numerical calculations of anisotropic hopping transport based on the resistor network model are presented. Conductivity is shown to follow the stretched exponential dependence on temperature with exponents changing from 1/4 to 1 as the wave functions
Externí odkaz:
http://arxiv.org/abs/1606.08599
Autor:
Ihnatsenka, S., Zozoulenko, I. V.
Publikováno v:
Phys. Rev. B 88, 085436 (2013)
Electronic, transport, and spin properties of grain boundaries (GBs) are investigated in electrostatically doped graphene at finite electron densities within the Hartree and Hubbard approximations. We demonstrate that depending on the character of th
Externí odkaz:
http://arxiv.org/abs/1309.0127
Autor:
Ihnatsenka, S., Kirczenow, G.
Publikováno v:
Phys. Rev. B 88, 125430 (2013)
We present numerical studies of conduction in graphene nanoribbons with reconstructed edges based on the standard tight-binding model of the graphene and the extended Huckel model of the reconstructed defects. We performed atomic geometry relaxation
Externí odkaz:
http://arxiv.org/abs/1306.1042
Autor:
Ihnatsenka, S., Zozoulenko, I. V.
We provide a systematic quantitative description of spin polarization in armchair and zigzag graphene nanoribbons in a perpendicular magnetic field. We first address spinless electrons within the Hartree approximation studying the evolution of the ma
Externí odkaz:
http://arxiv.org/abs/1206.6251
Autor:
Ihnatsenka, S., Kirczenow, G.
We present self-consistent calculations of electron transport in graphene nanoconstrictions within the Hartree approximation. We consider suspended armchair ribbons with V-shaped constrictions having perfect armchair or zigzag edges as well as mesosc
Externí odkaz:
http://arxiv.org/abs/1206.4287
Autor:
Ihnatsenka, S., Kirczenow, G.
We present the results of million atom electronic quantum transport calculations for graphene nanoconstrictions with edges that are smooth apart from atomic scale steps. We find conductances quantized in integer multiples of 2e2/h and a plateau at ~0
Externí odkaz:
http://arxiv.org/abs/1203.2025
Autor:
Ihnatsenka, S.
Publikováno v:
Comput. Phys. Commun. 183 (2012) 543--546
The performance potential for simulating quantum electron transport on graphical processing units (GPUs) is studied. Using graphene ribbons of realistic sizes as an example it is shown that GPUs provide significant speed-ups in comparison to central
Externí odkaz:
http://arxiv.org/abs/1107.5300