Results 31 to 40 of about 3,384,613 (196)
Қарағанды университетінің хабаршысы. Физика сериясы, 2023 The structure of stable phases is investigated using first-principle calculations based on the functionals: LDA, GGA and newly developed general-purpose heavily constrained and appropriately normalized meta GGAfunctional (SCAN).
Т.М. Инербаев +5 more
doaj +1 more source
The density of states of chaotic Andreev billiards [PDF]
, 2011 Quantum cavities or dots have markedly different properties depending on whether their classical counterparts are chaotic or not. Connecting a superconductor to such a cavity leads to notable proximity effects, particularly the appearance, predicted by ...
A. F. Andreev +10 more
core +3 more sources
Confirming X-ray parametric down conversion by time–energy correlation
Results in PhysicsWe present measurements of X-ray Parametric Down Conversion at the Advanced Photon Source synchrotron facility. Using an incoming pump beam at 22 keV, we observe the simultaneous, elastic emission of down-converted photon pairs generated in a diamond ...
N.J. Hartley +18 more
doaj +1 more source
Density of states of helium droplets
, 2007 Accurate analytical expressions for the state densities of liquid He-4 droplets are derived, incorporating the ripplon and phonon degrees of freedom. The microcanonical temperature and the ripplon angular momentum level density are also evaluated.
C. Kittel +8 more
core +2 more sources
Phonon Density of States and Anharmonicity of UO2 [PDF]
, 2014 Phonon density of states (PDOS) measurements have been performed on polycrystalline UO2 at 295 and 1200 K using time-of-flight inelastic neutron scattering to investigate the impact of anharmonicity on the vibrational spectra and to benchmark ab initio ...
Abernathy, Douglas L. +6 more
core +3 more sources
On the density of states of graphene in the nearest-neighbor approximation
Condensed Matter Physics, 2017 We propose an alternative analytical expression for the density of states of a clean graphene in the nearest-neighbor approximation. In contrast to the previously known expression, it can be written as a single formula valid for the whole energy range ...
V.O. Ananyev, M.I. Ovchynnikov
doaj +1 more source
Electronic structure of 2H-SnSe2: ab initio modeling and comparison with experiment
Semiconductor Physics, Quantum Electronics & Optoelectronics, 2016 Energy band structure, total and local partial densities of states, spatial distribution of electronic density of 2H-SnSe2 have been calculated using the density functional theory method in LDA and LDA+U approximations both with and without consideration
D.I. Bletskan
doaj +1 more source
TiO2/Gold nanocomposite as an extremely sensitive molecule sensor for NO2 detection: A DFT study [PDF]
Journal of Water and Environmental Nanotechnology, 2016 First-principles calculations within density functional theory (DFT) have been performed to investigate the interactions of NO2 molecules with TiO2/Gold nanocomposites in order to completely exploit the adsorption properties of these nanostructures ...
Amirali Abbasi +2 more
doaj +1 more source
Energies, 2023 In this work, the adsorption of CO onto the surface of the transition metal Ni at different coverage levels was explored based on the density functional theory (DFT).
Kun Wang, Kunlun Li, Fuqing Wang
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Computational Difficulty of Computing the Density of States [PDF]
, 2011 We study the computational difficulty of computing the ground state degeneracy and the density of states for local Hamiltonians. We show that the difficulty of both problems is exactly captured by a class which we call #BQP, which is the counting version
A. Y. Kitaev +4 more
core +2 more sources