first principles band structure calculation
First Principles Calculation of the Structure and Dielectric Properties of Bi2Ti2O7
... The band structure for the bands which are mainly composed of Bi 6s orbitals consist of four dispersive and four nondis- persive bands, for which the density of states shows a sharp peak plus a broad ...
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First Principles Study of the Band Gap Structure of Oxygen Passivated Silicon Nanonets
... conduction band mini- mum (CBM) of bulk Si moves to 1/3 GZ or X due to the folding effect, which is in accordance with the theoretical ...valence band occur at ...valence band maximum (VBM) in all ...
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First Principles Investigation of the Structure and Properties of Au Nanoparticles Supported on ZnO
... discussion. First, the NLEP + U method is an empirical approach fi tted to the experimental parameters (such as the lattice constant and band ...hybrid calculation, we found that the work functions of ...
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First Principles Calculation of Thermal Expansion of Carbon and Boron Nitrides Based on Quasi Harmonic Approximation
... Calculation results of phonon DOS of two carbon allotropes, diamond and graphite are shown in Fig. 1. The calculations were made for cells with equilibrium volume at 0 K. The figure shows that diamond and graphite ...
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Magnetic State of Components of Fe-Mn Alloys and Mixing energy: First-Principles Calculation
... the calculation of the energy of atomic interaction in solid ...self-consistent calculation of the electronic-band structure is performed for a model crystal formed by periodically repeating ...
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Study of Zn Substituted Germanium Clathrates as High Performance Thermoelectric Materials Assisted by First Principles Electronic Structure Calculation
... the Zn. Since the Zn was only sited at 6c at x ¼ 6, but at x ¼ 8 and x ¼ 10 it was also sited at 16i in the present lattice models. The bond strength of a host Ga atom at 6c sites is weaker than that at other sites. On ...
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Synthesis of gamma and theta alumina phases complemented with first principles calculation
... Nanoparticles alumina with different phases have been widely investigated and used in many applications due to their excellent mechanical and optical properties that are superior to other conventional ceramic materials. ...
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Synthesis and First-principle Calculation of TiO2 Rutile Nanowire Electrodes for Dye-sensitized Solar Cells
... energy band structure and electron density of states of the rutile nanowire were calculated using a first-principles method and compared to bulk anatase and rutile TiO 2 ...The band gap ...
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Thermoelectric Properties of Ce3Te4 under High Pressure: First Principles Calculation
... crystal. And the bandgap width also tends to narrow gradu- ally as the pressure increases. In addition, we also find that there is a region with very high DOS above the Fermi level, and its broadening also changes with ...
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First Principles Calculation of Point Defects in Uranium Dioxide
... valence band, whereas the acceptor level that newly appeared in the energy gap is mainly created by the 2nd ...the band structure is due to the fact that the interatomic interactions among atoms are ...
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First Principles Enhanced Electronic Band Structure of SrTiO
... (vc-relax) calculation as implemented in Quantum Espresso ...where band gap value will be determined from the calculated band structure with changing in ...The band gap values from the ...
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First Principles Studies on the Electronic Structure and Band Structure of Paraelectric SrTiO3 by Different Approximations
... ideal structure is cubic perovskite,where the A and B cations are arranged on a simple cubic lattice and the O ions lie on the face centers nearest the (typically transition metal) B ...ideal structure ...
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Interaction between Substitutional and Interstitial Elements in α iron Studied by First principles Calculation
... this calculation does not take account of the interface energy between iron and carbide, it is impossible to discuss the stability of the infinitesimal precipitate whose formation and interface energies are ...
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Theoretical methods for spintronics in semiconductors with applications
... imaginary band structure is less accurate, but is consistent with the rest of the procedure and thus it avoids the introduction of small spurious ...single band formalism by Frensley ...
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Polariton condensation in S and P flatbands in a two dimensional Lieb lattice
... is etched in order to create a sufficient potential landscape and not to damage the optically active region of the QWs. The etched micropillars in the Lieb lattices have a diameter of 3.0 µm and 2.5 µm at a cavity-exciton ...
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First Principles Study of Point Defects in GaAs/AlAs Superlattice: the Phase Stability and the Effects on the Band Structure and Carrier Mobility
... defects have slight effects on the electronic structure. For GaAs/AlAs superlattice with the interstitial or vacancy defects, significant reduction of band gap or induced metallicity is found. Further ...
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THE EFFECT OF LUMINESCENT PROPERTIES OF ZN3V2O8 PHOSPHOR WITH CALCINATION TEMPERATURE AND FIRST-PRINCIPLES CALCULATION.
... spectrum range between 420-690nm, the peak at 550nm wavelength, the light emitting area covering the wavelength of visible light can be used as white light. From the diele[r] ...
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First Principles Calculation of L10 Disorder Phase Boundary in Fe Pd System
... phenomenological calculation is not fully ...potential. First off, Lennard-Jones parameters to be determined heavily depend on the experimental data of lattice constants, heats of formation etc at the ground ...
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Optimal model for 4 band biorthogonal wavelets bases for fast calculation
... narrow band high frequency components in frequency responses, to give better energy compaction than -band ...some structure for fast calculation, among which we can select the best ones for ...
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Crystal Structure and Physical Properties of HfB4 via First-Principles Calculations
... was obtained from the hot-pressing of equal amounts of Hf and B in graphite dies and subsequent heat treatment at 1400 °С [31]. For each NaCl-type HfB unit cell, it contains four HfB formula units, in which B atom ...
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