Search Results - "Kocharian, A.N."

Circular dichroism and absorption in a finite cholesteric liquid crystal layer with an isotropic defect layer inside by Gevorgyan, A.H., Kocharian, A.N., Vardanyan, G.A.

“…Circular dichroism and absorption are calculated for one-dimensional chiral soft substance (a cholesteric liquid crystal, CLC) cells with an isotropic defect…”
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Possible phase separation in square and honeycomb Hubbard model: A variational cluster study by Fang, Kun, Fernando, G.W., Balatsky, A.V., Kocharian, A.N.

“…The VCA ground state of the 2D Hubbard model is examined for possible phase separation under hole doping manifested by spatial inhomogeneities of coexisting…”
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Photonic density and nonreciprocal optical properties in chiral liquid crystals by Gevorgyan, A.H., Kocharian, A.N.

“…Nonreciprocal optical properties of anisotropic (nano-film) heterostructures made of a cholesteric and nematic liquid crystal (CLC-NLC) layers are studied…”
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Phase separation instabilities and magnetism in two dimensional square and honeycomb Hubbard model by Kocharian, A.N., Fang, Kun, Fernando, G.W., Balatsky, A.V.

“…The variational cluster approximation is applied to rigorously calculate intrinsic local electron correlations in bipartite square and honeycomb Hubbard…”
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Pairing enhancement in Betts lattices with next nearest neighbor couplings: Exact results by Fang, Kun, Fernando, G.W., Kocharian, A.N.

“…Electron instabilities in the Hubbard model with the next nearest neighbor coupling are calculated by exact diagonalization in finite, two-dimensional Betts…”
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Exact quantum critical points and phase separation instabilities in Betts Hubbard nanoclusters by Kocharian, A.N., Fang, Kun, Fernando, G.W.

“…Spontaneous phase separation instabilities with the formation of various types of charge and spin pairing (pseudo)gaps in U>0 Hubbard model including the next…”
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Pairing modulations and phase separation instabilities in Bi2Sr2CaCu2O8+δ by Fang, Kun, Fernando, G.W., Balatsky, A.V., Kocharian, A.N., Palandage, K.

“…There is growing evidence that the unconventional spatial inhomogeneities in the doped high-Tc superconductors are accompanied by the pairing of electrons,…”
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Electron coherent and incoherent pairing instabilities in inhomogeneous bipartite and nonbipartite nanoclusters by Kocharian, A.N., Fernando, G.W., Palandage, K., Davenport, J.W.

“…Exact calculations of collective excitations and charge/spin (pseudo) gaps in an ensemble of bipartite and nonbipartite clusters yield level crossing…”
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Spin-polarizing properties of heterostructures with magnetic nano elements by Kocharian, A.N., Sahakyan, A.S., Movsesyan, R.M.

“…The problem of electron resonant and non-resonant scatterings on two magnetized barriers is studied in the one-dimension. The transfer-matrix is built up to…”
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Thermodynamic properties, magnetism and Mott–Hubbard-like transitions in nanoscale clusters by Kocharian, A.N., Fernando, G.W., Palandage, K., Davenport, J.W.

“…The charge–spin response thermodynamics in the presence of a magnetic field are calculated using analytical diagonalization of small clusters. Rigorous…”
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Exact thermodynamics of pairing and charge–spin separation crossovers in small Hubbard nanoclusters by Kocharian, A.N., Fernando, G.W., Wang, T., Palandage, K., Davenport, J.W.

“…The exact numerical diagonalization and thermodynamics in an ensemble of small Hubbard clusters in the ground state and finite temperatures reveal intriguing…”
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Spin–charge separation and electron pairing instabilities in Hubbard nanoclusters by Kocharian, A.N., Fernando, G.W., Palandage, K., Davenport, J.W.

“…Electron charge and spin pairing instabilities in various cluster geometries for attractive and repulsive electrons are studied exactly under variation of…”
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Phase diagram and BCS–Bose condensation crossover in 1D and 2D Hubbard models by Kocharian, A.N., Yang, C., Chiang, Y.L.

“…The ground-state energy, the concentration of double occupied sites and the density of bound electron pairs in low-dimensional attractive Hubbard model are…”
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Induced magnetization and inhomogeneous superconductivity in presence of external magnetic field by Yang, C., Kocharian, A.N., Chiang, Y.L.

“…Thermodynamic characteristics of the one-dimensional attractive Hubbard model are calculated by means of the generalized self-consistent field (GSCF) approach…”
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Erratum: Mean field calculation of thermal properties of simple nucleon matter on a lattice [Phys. Rev. C 70, 014315 (2004)] by Abe, T., Seki, R., Kocharian, A. N.

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The phase diagram and inhomogenous superconductivity in the one-dimensional attractive Hubbard model by Kocharian, A.N., Yang, C., Chiang, Y.L.

“…The thermodynamic phase diagram of the attractive Hubbard model in the presence of magnetic field is calculated in wide range of temperature, electron…”
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Exact magnetic phase diagram of the one-dimensional Hubbard model by Yang, C, Kocharian, A.N, Chiang, Y.L

“…The exact solution of the one-dimensional Hubbard model, both attractive and repulsive, is investigated numerically over a wide range of interaction strength…”
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Mott–Hubbard crossover in two-dimensional clusters threaded by a magnetic field by Jermakian, A.K, Kocharian, A.N, Saakian, A.S

“…The ground-state characteristics of mesoscopic Hubbard clusters in the high-spin region are investigated as a function of cluster dimensions, lattice geometry…”
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One-dimensional Hubbard model in the presence of magnetic field by Kioussis, N., Kocharian, A.N., Park, S.

“…The ground-state properties of the one-dimensional Hubbard model at half-filling in the presence of magnetic field are examined using the generalized…”
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Phase transitions in a generalized Hubbard model by Kocharian, A.N., Reich, G.R.

“…Introducing different bandwidths t 1 and t 2 in the Hubbard model, and allowing the spinless particles to transform from one band to another (hybridization)…”
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