Smart local orbitals for efficient calculations within density functional theory and beyond
نویسندگان
چکیده
منابع مشابه
Brueckner Orbitals and Density-Functional Theory
By means of Many-Body Perturbation Theory (MBPT) it is shown that minimizing the energy expectation value of a closed-shell system in a certain order of the preturbation expansion by varying the partitioning of the Hamiltonian, leads to a zeroth-order function, which – as the order of perturbation increases and provided the expansion converges properly – approaches a determinant of Brueckner or...
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Drug delivery by nanomaterials is an active emergent research area and CNTs draws considerable potential application owing to its unique quasi one-dimensional structure and electronic properties. Single walled carbon nanotubes and carbon fullerenes can be used in drug delivery due to their mechanical and chemical stability. The past few years, increasing attention by several reputed groups has ...
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We present a method to discretize the Kohn-Sham Hamiltonian matrix in the pseudopotential framework by a small set of basis functions automatically contracted from a uniform basis set such as plane waves. Each basis function is localized around an element, which is a small part of the global domain containing multiple atoms. We demonstrate that the resulting basis set achieves meV accuracy for ...
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Nicholas D. M. Hine,1,* Mark Robinson,2 Peter D. Haynes,1 Chris-Kriton Skylaris,3 Mike C. Payne,2 and Arash A. Mostofi1 1The Thomas Young Centre for Theory and Simulation of Materials, Imperial College London, London SW7 2AZ, United Kingdom 2Theory of Condensed Matter, Cavendish Laboratory, J. J. Thomson Avenue, Cambridge CB3 0HE, United Kingdom 3School of Chemistry, University of Southampton, ...
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ژورنال
عنوان ژورنال: The Journal of Chemical Physics
سال: 2020
ISSN: 0021-9606,1089-7690
DOI: 10.1063/5.0021821