Showing 161 - 180 results of 261 for search '"first principle"', query time: 0.05s Refine Results
  1. 161

    Geometries and Electronic States of Divacancy Defect in Finite-Size Hexagonal Graphene Flakes by Lili Liu, Shimou Chen

    Published 2017-01-01
    “…The geometries and electronic properties of divacancies with two kinds of structures were investigated by the first-principles (U) B3LYP/STO-3G and self-consistent-charge density-functional tight-binding (SCC-DFTB) method. …”
    Get full text
    Article
  2. 162

    A DFT survey of CH4 storage and separation from CH4 /X (X = H2, CO2, N2, CF4, he, ne, and Ar) gas mixtures on Ti/Sc decorated B40 fullerene by P. Mousavian, M.D. Esrafili

    Published 2025-03-01
    “…In the current study, first-principles calculations are used to determine the stability of B40 fullerene decorated with Sc or Ti atoms and its applications in storing and separating CH4 from gas mixtures. …”
    Get full text
    Article
  3. 163

    Electronic Structure and Optical Properties of GaAs1-xBix Alloy by Xindong You, Renjie Zhou

    Published 2014-01-01
    “…A first-principles study has been performed to investigate the structural and electronic properties of the GaAs1-xBix system. …”
    Get full text
    Article
  4. 164

    From de Sitter to de Sitter: Decaying Vacuum Models as a Possible Solution to the Main Cosmological Problems by G. J. M. Zilioti, R. C. Santos, J. A. S. Lima

    Published 2018-01-01
    “…It is also argued that even the cosmological constant problem becomes less severe provided that the characteristic scales of the two limiting de Sitter manifolds are predicted from first principles.…”
    Get full text
    Article
  5. 165

    Superconductivity in ordered Li–Al–B compounds by K. Hussain, S. J. Donaldson, E. Karaca, P. J. P. Byrne, P. J. Hasnip, M. I. J. Probert

    Published 2025-01-01
    “…Abstract Using first principles calculations, we show that $$\hbox {Li}_x\hbox {Al}_y\hbox {B}_{2(x+y)}$$ materials have strong electron-phonon coupling, with many having a superconducting critical temperature ( $$T_c$$ ) that exceeds that of the more familiar $$\hbox {MgB}_2$$ at ambient pressure. …”
    Get full text
    Article
  6. 166

    Machine learning configuration-dependent friction tensors in Langevin heatbaths by Matthias Sachs, Wojciech G Stark, Reinhard J Maurer, Christoph Ortner

    Published 2025-01-01
    “…We demonstrate the capabilities of the model approach by fitting a model of configuration-dependent tensorial electronic friction calculated from first principles that arises during reactive molecular dynamics at metal surfaces.…”
    Get full text
    Article
  7. 167

    Kondo spectral functions at low-temperatures: A dynamical-exchange-correlation-field perspective by Zhen Zhao

    Published 2025-01-01
    “…Consequently, it can significantly reduce the complexity of the many-body problem faced by first-principles approaches to strongly correlated materials.…”
    Get full text
    Article
  8. 168

    R-matrices and Miura operators in 5d Chern-Simons theory by Nafiz Ishtiaque, Saebyeok Jeong, Yehao Zhou

    Published 2025-01-01
    “…We derive Miura operators for $W$- and $Y$-algebras from first principles as the expectation value of the intersection between a topological line defect and a holomorphic surface defect in 5-dimensional non-commutative $\mathfrak{gl}(1)$ Chern-Simons theory. …”
    Get full text
    Article
  9. 169

    Formation, Energetics, and Electronic Properties of Graphene Monolayer and Bilayer Doped with Heteroatoms by Yoshitaka Fujimoto

    Published 2015-01-01
    “…We here review the recent work of boron and nitrogen doping effects into graphene monolayer as well as bilayer on the basis of the first-principles electronic structure calculations in the framework of the density-functional theory. …”
    Get full text
    Article
  10. 170

    The Synthetic Effects of Iron with Sulfur and Fluorine on Photoabsorption and Photocatalytic Performance in Codoped by Xiaohua Li, Jibao Lu, Ying Dai, Meng Guo, Baibiao Huang

    Published 2012-01-01
    “…The structural and electronic properties of iron-fluorine (Fe-F) and iron-sulfur (Fe-S) codoped anatase TiO2 are investigated by first-principles based on density functional theory. Our results show that the formation energy of codoped system is lower than that of single-element doping, which indicates the synergic effect of codoping on the stability of the structure. …”
    Get full text
    Article
  11. 171

    Revisiting the Zinc-Blende/Wurtzite Heterocrystalline Structure in CdS by Zhaohui Zhou, Mingtao Li, Po Wu, Liejin Guo

    Published 2014-01-01
    “…The band offset at CdS zinc-blende (ZB)/wurtzite (WZ) heterocrystalline interface was revisited using the first principles calculations with the local density approximation (LDA), generalized gradient approximation (GGA), and Heyd-Scuseria-Ernzerhof (HSE06) hybrid functional. …”
    Get full text
    Article
  12. 172

    Magnetic Properties of Well-Aligned ZnO Nanorod Arrays Grown by a Simple Hydrothermal Reaction by Jiangni Yun, Rui Qu, Zhiyong Zhang, Jun Li

    Published 2014-01-01
    “…The PL results suggested that the possible defect in the as-prepared ZnO nanorod arrays might be VZn, Oi, or OZn. The first-principles calculations reveal that the room temperature ferromagnetism may result from the VZn defects present in the ZnO nanorod and the hybridization of the Zn 3d states with O 2p states is responsible for the half-metallic ferromagnetism in ZnO nanorod.…”
    Get full text
    Article
  13. 173

    Hydrothermal Synthesis of Pt-, Fe-, and Zn-doped SnO2 Nanospheres and Carbon Monoxide Sensing Properties by Weigen Chen, Qu Zhou, Shudi Peng

    Published 2013-01-01
    “…In addition, a theoretical study based on the first principles calculation was conducted. All results demonstrate the potential of Pt dopant for improving the gas sensing properties of SnO2-based sensors to carbon monoxide.…”
    Get full text
    Article
  14. 174

    Electron and light hyperbolicity correlation in α-CaGe_{2} by Han Gao, Xuejin Zhang, Chao Ding, Mingzheng Wang, Juan Wang, Bo Yang, Mingwen Zhao

    Published 2025-01-01
    “…The transition of electron hyperbolicity from type-I to type-II, induced by varying the chemical potential of electrons, also triggers a similar transition in light hyperbolicity. Through first-principles calculations, α-CaGe_{2} is identified as a promising material for achieving this transition. …”
    Get full text
    Article
  15. 175

    Analytical Prediction of Hole Diameter in Thin Plates Due to Hypervelocity Impact of Spherical Projectiles by William H. Jolly, William P. Schonberg

    Published 1997-01-01
    “…A first-principles-based model is presented for calculating the hole diameter resulting from the normal hypervelocity impact of a spherical aluminum projectile on a thin aluminum plate. …”
    Get full text
    Article
  16. 176

    Nonlinear excitation of energetic particle driven geodesic acoustic mode by resonance overlap with Alfvén instability in ASDEX Upgrade by Hao Wang, Philipp Lauber, Yasushi Todo, Yasuhiro Suzuki, Hanzheng Li, Malik Idouakass, Jialei Wang, Panith Adulsiriswad, The ASDEX Upgrade Team

    Published 2025-01-01
    “…In the present work, a first-principles simulation using the MEGA code investigated the mode properties in both the linear growth and nonlinear saturated phases. …”
    Get full text
    Article
  17. 177

    Analogous Atomic and Electronic Properties between VN and VNCB Defects in Hexagonal Boron Nitride by Chang-Youn Moon, Kee-Suk Hong, Yong-Sung Kim

    Published 2022-01-01
    “…We investigate defect properties in hexagonal boron nitride (hBN) which is attracting much attention as a single photon emitter. Using first-principles calculations, we find that nitrogen-vacancy defect VN has a lower energy structure in C1h symmetry in 1− charge state than the previously known D3h symmetry structure. …”
    Get full text
    Article
  18. 178

    Debris Cloud Material Characterization for Hypervelocity Impacts of Single- and Multimaterial Projectiles on Thin Target Plates by William P. Schonberg

    Published 1995-01-01
    “…This article presents a first-principles based method to calculate: the amount of material in a debris cloud created by a perforating hypervelocity impact that is solid, molten, and vaporous; the debris cloud leading edge, trailing edge, center-of-mass, and expansion velocities; and the angular spread of the debris cloud material. …”
    Get full text
    Article
  19. 179

    Elastic Properties and the Band Gap of AlNxP1-x Semiconductor Alloy: A Comparative Study of Various Ab Initio Approaches by M. P. Polak, M. J. Winiarski, K. Wittek, P. Scharoch

    Published 2016-01-01
    “…Structural and elastic properties of AlNxP1-x, a novel semiconductor alloy, are studied from the first principles in both zinc-blende and wurtzite structures. …”
    Get full text
    Article
  20. 180

    Half-Metallic Ferromagnetism in Chalcopyrite (AlGaMn)P2 Alloys by Byung-Sub Kang, Kwang-Pyo Chae, Haeng-Ki Lee

    Published 2015-01-01
    “…We studied the electronic and magnetic properties of (Al1−yMny)GaP2 (Ga-rich) and Al(Ga1−yMny)P2 (Al-rich) with y = 0.03125, 0.0625, 0.09375, and 0.125 by using the first-principles calculations. The ferromagnetic Mn-doped AlGaP2 chalcopyrite is the most energetically favorable one. …”
    Get full text
    Article