Results 31 to 40 of about 1,854,178 (340)

New Zirconium Diboride Polymorphs—First-Principles Calculations [PDF]

open access: yesMaterials, 2020
Two new hypothetical zirconium diboride (ZrB 2 ) polymorphs: (hP6-P6 3 /mmc-space group, no. 194) and (oP6-Pmmn-space group, no. 59), were thoroughly studied under the first-principles density functional theory calculations from the structural, mechanical and thermodynamic properties point of view.
Marcin Maździarz, Tomasz Mościcki
openaire   +2 more sources

Theoretical Study on Thermoelectric Properties and Doping Regulation of Mg3X2 (X = As, Sb, Bi)

open access: yesMetals, 2021
For searching both high-performances and better fits for near-room temperature thermoelectric materials, we here carried out a theoretical study on thermoelectric properties and doping regulation of Mg3X2 (X = As, Sb, Bi) by the combined method of first ...
Xiaofang Wang   +3 more
doaj   +1 more source

First principles calculation of spin-related quantities for point defect qubit research

open access: yesnpj Computational Materials, 2018
Point defect research in semiconductors has gained remarkable new momentum due to the identification of special point defects that can implement qubits and single photon emitters with unique characteristics.
V. Ivády, I. Abrikosov, Á. Gali
semanticscholar   +1 more source

Structures, Electric Properties and STM Images of GeSe Monolayers Doped by Group IV–VI Atoms: A First-Principles Study

open access: yesCrystals, 2023
Doping is an important method to modulate the physical and chemical properties of two-dimensional materials. By substitutional doping, different group IV–VI atoms are doped in GeSe monolayers to compose the doped models, of which the effects are ...
Hao Ni   +6 more
doaj   +1 more source

Novel time-saving first-principles calculation method for electron-transport properties [PDF]

open access: yes, 2010
We present a time-saving simulator within the framework of the density functional theory to calculate the transport properties of electrons through nanostructures suspended between semi-infinite electrodes.
K. Hirose   +4 more
core   +3 more sources

Electron–phonon physics from first principles using the EPW code [PDF]

open access: yesnpj Computational Materials, 2023
EPW is an open-source software for ab initio calculations of electron–phonon interactions and related materials properties. The code combines density functional perturbation theory and maximally localized Wannier functions to efficiently compute electron–
Hyungjun Lee   +18 more
semanticscholar   +1 more source

Strain Effects in Gallium Nitride Adsorption on Defective and Doped Graphene: First-Principles Calculations

open access: yesCrystals, 2018
Transferable, low-stress gallium nitride grown on graphene for flexible lighting or display applications may enable next-generation optoelectronic devices. However, the growth of gallium nitride on graphene is challenging.
Han Yan   +4 more
doaj   +1 more source

First principles calculation of Manganese based half Heusler compounds

open access: yesEast European Journal of Physics, 2020
The Half-Heusler compounds exhibit a diverse range of tuneable properties including half-metallic ferromagnetism topological insulator, solar cells and thermoelectric converters.
Lalit Mohan   +4 more
doaj   +1 more source

Calculation of the Anisotropic Coefficients of Thermal Expansion: A First-Principles Approach [PDF]

open access: yes, 2019
Predictions of the anisotropic coefficients of thermal expansion are needed to not only compare to experimental measurement, but also as input for macroscopic modeling of devices which operate over a large temperature range.
Løvvik, Ole M., Pike, Nicholas A.
core   +2 more sources

Elastic Properties of CaSiO3 Perovskite from ab initio Molecular Dynamics

open access: yesEntropy, 2013
Ab initio molecular dynamics simulations were performed to investigate the elasticity of cubic CaSiO3 perovskite at high pressure and temperature. All three independent elastic constants for cubic CaSiO3 perovskite, C11, C12, and C44, were calculated ...
Shigeaki Ono
doaj   +1 more source

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