Zobrazeno 1 - 10
of 734
pro vyhledávání: '"KOGAN, E. A."'
Autor:
Kogan, E., Skopenkov, A.
In 2019 P. Patak and M. Tancer obtained the following higher-dimensional generalization of the Heawood inequality on embeddings of graphs into surfaces. We expose this result in a short well-structured way accessible to non-specialists in the field.
Externí odkaz:
http://arxiv.org/abs/2106.14010
Publikováno v:
J. Appl. Phys. 126, 194302 (2019)
Broadening of the Raman scattering (RS) spectra was studied in monolayer graphene samples irradiated with various dose of ions followed by annealing of radiation damage at different temperatures. It is shown that the width {\Gamma} (full width at hal
Externí odkaz:
http://arxiv.org/abs/1909.10273
Autor:
Kogan, E.
Two triples of triangles having pairwise disjoint outlines in 3-space are called combinatorially isotopic if one triple can be obtained from the other by a continuous motion during which the outlines of the triangles remain pairwise disjoint. We conj
Externí odkaz:
http://arxiv.org/abs/1908.03865
Autor:
Shlimak, I., Zion, E., Butenko, A., Kaganovskii, Yu., Richter, V., Sharoni, A., Kogan, E., Kaveh, M.
Publikováno v:
FlatChem 14, 100084 (2019)
A brief review of experiments directed to study a gradual localization of charge carriers and metal-insulator transition in samples of disordered monolayer graphene is presented. Disorder was induced by irradiation with different doses of heavy and l
Externí odkaz:
http://arxiv.org/abs/1907.10472
Autor:
Kogan, E.
Publikováno v:
J. Phys. Commun. 3 (2019) 125001
We consider a general model, describing a quantum impurity with degenerate energy levels, interacting with a gas of itinerant electrons, derive general scaling equation for the model, and analyse the connection between its particular forms and the sy
Externí odkaz:
http://arxiv.org/abs/1904.04672
Autor:
Kogan, E.
Publikováno v:
C-Journal of Carbon Research 5, 14 (2019)
In our publication from 8 years ago (Phys. Rev. B {\bf 84}, 115119 (2011)) we calculated RKKY interaction between two magnetic impurities adsorbed on graphene at zero temperature. We show in this short paper that the approach based on Matsubara forma
Externí odkaz:
http://arxiv.org/abs/1904.00427
Autor:
Kogan, E.
Publikováno v:
J. Phys. Commun. 2, 085001 (2018)
We discuss Kondo effect for a general model, describing a quantum impurity with degenerate energy levels, interacting with a gas of itinerant electrons, and derive scaling equation to the second order for such a model. We show how the scaling equatio
Externí odkaz:
http://arxiv.org/abs/1801.05233
Autor:
Zion, E., Butenko, A., Kaganovskii, Yu., Richter, V., Wolfson, L., Sharoni, A., Kogan, E., Kaveh, M., Shlimak, I.
Publikováno v:
J. Appl. Phys. 121, 114301 (2017)
The Raman scattering spectra (RS) of two series of monolayer graphene samples irradiated with various doses of C$^{+}$ and Xe$^{+}$ ions were measured after annealing in high vacuum, and in forming gas (95\%Ar+5\%H$_{2}$). It was found that these met
Externí odkaz:
http://arxiv.org/abs/1612.06155
Autor:
Butenko, A., Zion, E., Kaganovskii, Yu., Wolfson, L., Richter, V., Sharoni, A., Kogan, E., Kaveh, M., Shlimak, I.
Publikováno v:
J. Appl. Phys. 120, 044306 (2016)
The influence of long-term ageing (about one year) on the Raman scattering (RS) spectra and the temperature dependence of conductivity has been studied in two series of monolayer graphene samples irradiated by different doses of C$^{+}$ and Xe$^{+}$
Externí odkaz:
http://arxiv.org/abs/1612.06479
Autor:
Kogan, E., Silkin, V. M.
Publikováno v:
Phys. Stat. Sol. B 254, No. 9, 1700035 (2017)
In our previous paper (Phys. Rev. B {\bf 89}, 165430 (2014)) we have found that in graphene, in distinction to the four occupied bands, which can be described by the simple tight-binding model (TBM) with four atomic orbitals per atom, the two lowest
Externí odkaz:
http://arxiv.org/abs/1610.03815