Results 21 to 30 of about 1,127,823 (295)

First-principles calculations for topological quantum materials [PDF]

open access: yesNature Reviews Physics, 2021
26 pages, 7 ...
Jiewen Xiao, Binghai Yan
openaire   +2 more sources

Effects of Zn and Mg Segregations on the Grain Boundary Sliding and Cohesion in Al: Ab Initio Modeling

open access: yesMetals, 2021
The formation of Zn and Mg segregations at a tilt Σ5{013} grain boundary (GB) in Al and the effects of these solutes on deformation behavior of polycrystalline Al were investigated using ab initio total energy calculations. Using a step-by-step modeling
Andrey Kuznetsov   +3 more
doaj   +1 more source

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 investigation of transient current of molecular devices by using complex absorbing potential [PDF]

open access: yes, 2013
Based on the non-equilibrium Green's function (NEGF) coupled with density function theory (DFT), namely, NEGF-DFT quantum transport theory, we propose an efficient formalism to calculate the transient current of molecular devices under a step-like pulse ...
Chen, J., Wang, J., Zhang, L.
core   +2 more sources

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

First Principles Calculation of Anomalous Hall Conductivity in Ferromagnetic bcc Fe [PDF]

open access: yes, 2003
We perform a first principles calculation of the anomalous Hall effect in ferromagnetic bcc Fe. Our theory identifies an intrinsic contribution to the anomalous Hall conductivity and relates it to the k-space Berry phase of occupied Bloch states.
A. H. MacDonald   +15 more
core   +4 more sources

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

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

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