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Article
Three-Spin System in the Presence of the Quantum Cluster Interaction
We consider a three-spin system under Heisenberg and quantum cluster interactions. Firstly, by focusing on the entanglement between each pair of them at zero temperature, we show that where the quantum phase t...
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Article
L1 0 -FePt Nanoparticles Cluster as a Magnetic Vortex
Cluster assemblies of 10–30 nm ferromagnetic nanoparticles in two dimensions may show magnetic vortex configurations. The average diameters of vortices with in-plane magnetization are about 2 orders of magnitu...
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Article
Ab initio study of electronic, magnetic, elastic and optical properties of full Heusler Co2MnSb
Ab-initio study of electronic, magnetic, elastic and optical properties of full Heusler Co2MnSb is performed in the framework of the Density Functional Theory to obtain the associated parameters. Equilibrium latt...
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Article
Spin-polarized electron transport through magnetic poly-BIPO molecule: the role of soliton–antisoliton separation
Spin-polarized transport through a one-dimensional metal/poly-BIPO/metal model junction with the soliton–antisoliton separation is investigated. Nonlinear spin and charge densities are considered in magnetic p...
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Article
Electronic Structure of Ni-Doped BaFe2−x Ni x As2 (x = 0, 1, 2) Superconductor in the Nonmagnetic and Magnetic States
The spin configuration, equilibrium crystal structure, and electronic structure of BaFe 2−x Ni x As 2 (x = 0, 1, 2) have been investigated by using ab in...
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Article
Influence of Soliton Spin Density on the Spin Filtering Properties of Magnetic Poly-BIPO Molecule
Spin-polarized transport through the magnetic polyacetylene (poly-BIPO) in the presence of a soliton spin density distribution is numerically investigated in the metal/poly-BIPO/metal model junction. The study...
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Article
Temperature Dependence of Magnetic Parameters in FePt Nanoparticles
Here, particular focus is placed on the atomic alignment and the order–disorder phase transition of the FePt alloy with the aid of a model that can describe realistic phenomena. Here, we present a method to st...
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Article
Electronic and optical properties of Full-Heusler alloy Fe3−xMnxSi
The electronic and optical properties of the nonstoicheiometric Heusler alloys Fe3−x Mn x Si with (x = 0,0.75,1,1.25,2) have been studied by the first principles ...
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Article
Substitutional do** of Cu in diamond: Mott physics with p orbitals
Discovery of superconductivity in the impurity band formed by heavy do** of boron into diamond (C:B) as well as do** of boron into silicon (Si:B) has provided a rout for the possibility of new families of...
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Article
Spherical Symmetric Solution in f(R) Model Around Charged Black Hole
A static, asymptotically flat, spherically symmetric solutions is investigated in f(R) theories of gravity for a charged black hole. We have studied the weak field limit of f(R) gravity for the some f(R) model su...
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Article
Electronic transport calculation of adsorbate NO2 and NO molecules on graphene using Maximally Localized Wannier functions
In this paper we have investigated the adsorption of the gas molecules (NO2, NO) on graphene, using first-principles methods. For full geometric relaxation of the molecules in the vicinity of a graphene sheet, we...
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Article
Quantum Dynamics of a Dissipative Deformed Harmonic Oscillator
The quantum dynamics of a dissipative deformed harmonic oscillator is investigated in the framework of the minimal coupling method. The reduced density matrix of the deformed oscillator is obtained and the dec...
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Article
Valence fluctuations in CeIn3 under the effect of pressure
The impacts of pressure on the structural and electronic properties of CeIn3 have been calculated. The calculations are performed in the presence and the absence of spin-orbit interaction as well as GGA+U using d...
