A discontinuous Galerkin scheme for full-potential electronic structure calculations
A discontinuous Galerkin scheme for full-potential electronic structure calculations
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全势电子结构计算的间断伽辽金方案
DOI:
10.1016/j.jcp.2019.02.006
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发表时间:
2019-01
影响因子:
4.1
通讯作者:
Chen Huajie
中科院分区:
文献类型:
--
作者:
Li Xiaoxu;Chen Huajie
In this paper, we construct an efficient numerical scheme for full-potential electronic structure calculations of periodic systems. In this scheme, the computational domain is decomposed into a set of atomic spheres and an interstitial region, and different basis functions are used in different regions: radial basis functions times spherical harmonics in the atomic spheres and plane waves in the interstitial region. These parts are then patched together by discontinuous Galerkin (DG) method. Our scheme has the same philosophy as the widely used (L)APW methods in materials science, but possesses systematically spectral convergence rate. We provide a rigorousa priorierror analysis of the DG approximations for the linear eigenvalue problems, and present some numerical simulations in electronic structure calculations.
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DOI:
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影响因子:
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DOI:
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发表时间:
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期刊:
Explorations in Numerical Analysis
影响因子:
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作者:
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通讯作者:
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