DFTB3: Extension of the self-consistent-charge density-functional tight-binding method (SCC-DFTB).
DFTB3: Extension of the self-consistent-charge density-functional tight-binding method (SCC-DFTB).
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DOI:
10.1021/ct100684s
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发表时间:
2012-04-10
影响因子:
5.5
通讯作者:
Elstner, Marcus
中科院分区:
文献类型:
--
作者:
Gaus, Michael;Cui, Qiang;Elstner, Marcus
The self-consistent-charge density-functional tight-binding method (SCC-DFTB) is an approximate quantum chemical method derived from density functional theory (DFT) based on a second-order expansion of the DFT total energy around a reference density. In the present study we combine earlier extensions and improve them consistently with, first, an improved Coulomb interaction between atomic partial charges, and second, the complete third-order expansion of the DFT total energy. These modifications lead us to the next generation of the DFTB methodology called DFTB3, which substantially improves the description of charged systems containing elements C, H, N, O, and P, especially regarding hydrogen binding energies and proton affinities. As a result, DFTB3 is particularly applicable to biomolecular systems. Remaining challenges and possible solutions are also briefly discussed.
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影响因子:
--
作者:
Elstner, M;Frauenheim, T;Suhai, S
通讯作者:
Suhai, S
影响因子:
4.4
作者:
BECKE, AD
通讯作者:
BECKE, AD
影响因子:
1.7
作者:
BOYS, SF;BERNARDI, F
通讯作者:
BERNARDI, F
影响因子:
2.3
作者:
Elstner, M;Jalkanen, KJ;Suhai, S
通讯作者:
Suhai, S
影响因子:
3.7
作者:
Elstner, M;Porezag, D;Seifert, G
通讯作者:
Seifert, G