Zobrazeno 1 - 10
of 20
pro vyhledávání: '"D. A. Conyuh"'
Publikováno v:
Journal of Experimental and Theoretical Physics. 134:31-41
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::76c51af26286276c0a3d79b69b4498dd
https://doi.org/10.1134/s1063776121120098
https://doi.org/10.1134/s1063776121120098
Publikováno v:
Journal of Experimental and Theoretical Physics. 133:461-470
Using the Born–von Karman model, we have constructed a simple analytic theory of dispersion of flexural vibrations in graphene, which makes it possible to take into account any number of configuration spheres. In the framework of this theory, the q
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2684903dbd4ffba6c756044b4df68761
https://doi.org/10.1134/s1063776121100022
https://doi.org/10.1134/s1063776121100022
Publikováno v:
Physics of the Solid State. 62:2143-2153
The effect of disorder in the distribution of force constants on optical and acoustic phonons in the scalar model of crystalline graphene is studied for both oscillations lying in the sheet plane and for flexural modes. It was shown that in the model
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2ef1acdf2697ec1e8695d98e9391d7bd
https://doi.org/10.1134/s1063783420110232
https://doi.org/10.1134/s1063783420110232
Autor:
D. A. Conyuh, Y. M. Beltukov
Publikováno v:
JETP Letters. 112:513-519
It has been shown that a correlated Wishart ensemble can be used to study the general vibrational properties of stable amorphous solids, where the energy is translationally invariant. The vibrational density of states and the dynamic structure factor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a44b296070b9dfa804545cc205a6043d
https://doi.org/10.1134/s0021364020200072
https://doi.org/10.1134/s0021364020200072
Autor:
Yaroslav M. Beltukov, D. A. Conyuh
Publikováno v:
Physics of the Solid State. 62:689-695
The random matrix theory is used to describe the vibrational properties of two-dimensional disordered systems with a large number of degrees of freedom. It is shown that the correlated Wishart ensemble allows one to take into account the most signifi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f4edeec921d4c967d098c42b2c2eedc7
https://doi.org/10.1134/s1063783420040149
https://doi.org/10.1134/s1063783420040149
Publikováno v:
Physics of the Solid State. 61:1272-1277
The influence of nanoinclusions on the macroscopic stiffness of amorphous systems was studied in the context of the random matrix model with translation symmetry. The numerical analysis of nanoinclusions, whose radius R is large enough, admits the us
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::89c875321840565426f0e613e95dc2bf
https://doi.org/10.1134/s1063783419070163
https://doi.org/10.1134/s1063783419070163
Autor:
Yaroslav M. Beltukov, D. A. Conyuh
Publikováno v:
Physical Review B. 103
We present a random matrix approach to study the general vibrational properties of stable amorphous solids with translational invariance using the correlated Wishart ensemble. Within this approach, both analytical and numerical methods can be applied
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::359f6ac932ec6f26db2401b8c8f78c33
https://doi.org/10.1103/physrevb.103.104204
https://doi.org/10.1103/physrevb.103.104204
Autor:
D. A. Conyuh, Yaroslav M. Beltukov
We show that viscoelastic effects play a crucial role in the damping of vibrational modes in harmonic amorphous solids. The relaxation of a given plane elastic wave is described by a memory function of a semi-infinite one-dimensional mass-spring chai
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ba89d1adbf00d109901681e7f2bd2d81
http://arxiv.org/abs/2012.15719
http://arxiv.org/abs/2012.15719
The density of vibrational states g(ω) of an amorphous system is studied by using the random-matrix theory. Taking into account the most important correlations between elements of the random matrix of the system, equations for the density of vibrati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::556bcd757cb22462ec44390eae1aba32
http://arxiv.org/abs/1905.01114
http://arxiv.org/abs/1905.01114
Publikováno v:
Journal of Physics: Conference Series. 1695:012179
We present a theory of flexural modes in graphene. The theory is based on the idea of negative springs in the second coordination circle between next nearest neighbours. As a result these negative springs change the dispersion law of vibrational mode
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4572ef8676eede950af3380eb6bceef4
https://doi.org/10.1088/1742-6596/1695/1/012179
https://doi.org/10.1088/1742-6596/1695/1/012179