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Yanyushkina N.N.,Volgograd State University | Belonenko M.B.,Entropique Inc.
Optics and Spectroscopy (English translation of Optika i Spektroskopiya) | Year: 2013

The wave equation for the electromagnetic field that propagates in carbon nanotubes with allowance for the proper nonlinearity of the medium is analyzed. An effective equation having the form of an analog of the classical sine-Gordon equation is obtained and analyzed numerically. The dependence of the pulse on the nonlinearity constant of the medium is revealed. The evolution of the electromagnetic pulse is studied. © 2013 Pleiades Publishing, Ltd. Source


Pak A.V.,Volgograd State University | Belonenko M.B.,Entropique Inc. | Belonenko M.B.,Volgograd Institute of Business
Physics of the Solid State | Year: 2013

The propagation of an ultrashort optical pulse in a multilayer structure formed by alternating graphene and boron nitride layers has been considered. Conduction electrons of this system have been described within the long-wavelength effective Hamiltonian in the case of low temperatures, and the electromagnetic field has been taken into account based on classical Maxwell's equations. The dependence of the evolution on the velocity and maximum amplitude of the ultrashort pulse has been revealed. © 2013 Pleiades Publishing, Ltd. Source


Yanyushkina N.N.,Volgograd State University | Belonenko M.B.,Entropique Inc.
Technical Physics | Year: 2013

The Maxwell equations for the electromagnetic field that propagates in carbon nanotubes (CNTs) placed in dispersive nonmagnetic dielectric media are analyzed with allowance for the intrinsic nonlinearity of the medium. The dependences of the pulse on the initial pulse amplitude, dispersion constants, and nonlinearity are revealed. © 2013 Pleiades Publishing, Ltd. Source


Belonenko M.B.,Entropique Inc. | Pak A.V.,Volgograd State University | Lebedev N.G.,Volgograd State University
Semiconductors | Year: 2013

The current-voltage characteristics of a tunneling contact between two graphene nanoribbons containing impurity atoms are obtained based on the previously calculated density of states. The dependences on the nanoribbon geometrical and energy characteristics are calculated. © 2013 Pleiades Publishing, Ltd. Source


Pak A.V.,Volgograd State University | Belonenko M.B.,Entropique Inc.
Physics of the Solid State | Year: 2013

The energy spectrum of electrons in doped graphene corresponding to the Landau levels in an external transverse magnetic field has been calculated in the low-energy approximation. The magnetic-field dependence of the electrical conductivity has been determined based on the derived dispersion relation of electrons in the doped graphene. The behavior of the conductivity has been analyzed for different impurity parameters, such as the hybridization potential and energy of adsorbed atoms. © 2013 Pleiades Publishing, Ltd. Source

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