Zobrazeno 1 - 10
of 50
pro vyhledávání: '"S. B. Feodosyev"'
Publikováno v:
Low Temperature Physics. 49:30-37
Based on the calculation and analysis of local Green’s functions of impurity atoms of low concentration in a two-dimensional graphene lattice, the conditions for the formation and characteristics of local discrete levels with energies lying outside
Publikováno v:
Low Temperature Physics. 48:628-633
The character of propagation in graphene nanostructures of quasi-flexural phonons, whose dispersion law differs from that of sound, is analyzed. Based on the calculation of the frequency dependences of the group velocities and the values of the path
Publikováno v:
Low Temperature Physics. 48:113-116
Using the x-ray diffraction method, the mean square displacement of solid nitrogen molecules from its lattice point in α phase was determined. The temperature dependences of the amplitude of translational vibrations of nitrogen molecules are obtaine
Publikováno v:
Low Temperature Physics. 48:121-125
The nature of flexural rigidity of graphene monolayers and the formation of the quasi-flexural modes in graphite and graphene nanofilms is explained. It is shown, that in the major part of the band of quasi-continuous spectrum, quasi-flexural modes d
Autor:
Igor Gospodarev, V. I. Grishaev, V. A. Sirenko, S. B. Feodosyev, E. V. Manzhelii, E. S. Syrkin
Publikováno v:
Low Temperature Physics. 46:187-194
The total electron densities of states for graphene nanoribbons with edges of different chirality, as well as the electron local densities of states for individual atoms in these nanoribbons, are calculated and analyzed. There are sharp resonance pea
Autor:
Evgen Syrkin, Valentina Sirenko, S. B. Feodosyev, Kseniia Minakova, Igor Gospodarev, I. S. Bondar
Publikováno v:
2021 IEEE 2nd KhPI Week on Advanced Technology (KhPIWeek).
The nature of flexural rigidity of graphene monolayers and a formation of the quasiflexural modes in a graphite and the graphene nanofilms is explained. It is shown, that in the major part of the band of quasicontinuous spectrum, quasiflexural modes
Publikováno v:
Low Temperature Physics. 45:355-362
The features of phonon spectra and their effect on the vibrational heat capacity of linear chains of inert gas atoms adsorbed onto a substrate, which is the surface of nanotubes bound to a nanobundle. The influence of the substrate results both in a
Autor:
E. S. Syrkin, Kseniia Minakova, Igor Gospodarev, V. A. Sirenko, I. S. Bondar, S. B. Feodosyev
Publikováno v:
2020 IEEE KhPI Week on Advanced Technology (KhPIWeek).
Among the large number of both fundamental and ordinary studies of various physical parts of nanomaterials, the study of graphene structures, such as nanofilms (bigraphene, trigraphene) and nanotubes is undoubtedly a priority. At first sight, from a
Autor:
I. S. Bondar, V. V. Eremenko, E. S. Syrkin, V. A. Sirenko, Alexander Feher, Kseniia Minakova, Igor Gospodarev, S. B. Feodosyev
Publikováno v:
Low Temperature Physics. 43:1323-1331
We perform analytical and numerical analysis of the electronic and phonon spectrum evolution of graphene during formation of a boundary with a “zigzag” chirality. It is determined, that the excited gap wave has a relativistic dispersion near the
Autor:
V. I. Grishaev, E. S. Syrkin, E. V. Manzhelii, Igor Gospodarev, Kseniia Minakova, S. B. Feodosyev
Publikováno v:
Scopus-Elsevier
Based on calculations conducted on a microscopic level, the phonon heat capacity of ultrathin graphene nanofilms such as bigraphene and trigraphene, and single-wall graphene nanotubes, is quantitatively described. The nature of the flexural stiffness