Efficient Implicit Solvation Method for Full Potential DFT.
Efficient Implicit Solvation Method for Full Potential DFT.
复制标题
充分发挥 DFT 潜力的高效隐式求解方法
DOI:
10.1021/acs.jctc.7b00297
复制
发表时间:
2017
影响因子:
5.5
通讯作者:
H. Oberhofer
中科院分区:
文献类型:
--
作者:
M. Sinstein;C. Scheurer;S. Matera;V. Blum;K. Reuter;H. Oberhofer
With the advent of efficient electronic structure methods, effective continuum solvation methods have emerged as a way to, at least partially, include solvent effects into simulations without the need for expensive sampling over solvent degrees of freedom. The multipole moment expansion (MPE) model, while based on ideas initially put forward almost 100 years ago, has recently been updated for the needs of modern electronic structure calculations. Indeed, for an all-electron code relying on localized basis sets andmore importantlya multipole moment expansion of the electrostatic potential, the MPE method presents a particularly cheap way of solving the macroscopic Poisson equation to determine the electrostatic response of a medium surrounding a solute. In addition to our implementation of the MPE model in the FHI-aims electronic structure theory code [Blum, V.; Comput. Phys. Commun. 2009, 180, 2175−2196, DOI: 10.1016/j.cpc.2009.06.022], we describe novel algorithms for determining equidistributed points on the solvation cavitydefined as a charge density isosurfaceand the determination of cavity surface and volume from just this collection of points and their local density gradients. We demonstrate the efficacy of our model on an analytically solvable test case, against high-accuracy finite-element calculations for a set of ≈140000 2D test cases, and finally against experimental solvation free energies of a number of neutral and singly charged molecular test sets [Andreussi, O.; J. Chem. Phys. 2012, 136, 064102, DOI: 10.1063/1.3676407; Marenich, A. V.; Minnesota Solvation Database, Version 2012; University of Minnesota: Minneapolis, MN, USA, 2012.]. In all test cases we find that our MPE approach compares very well with given references at computational overheads < 20% and sometimes much smaller compared to a plain self-consistency cycle.
登录
查看更多内容
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
M. Ruiz‐López
通讯作者:
M. Ruiz‐López
影响因子:
5.5
作者:
Zhi;J. Herbert
通讯作者:
J. Herbert
DOI:
10.1063/1.2168456
发表时间:
2005-10
期刊:
The Journal of chemical physics
影响因子:
--
作者:
D. Scherlis;J. Fattebert;F. Gygi;M. Cococcioni;N. Marzari
通讯作者:
D. Scherlis;J. Fattebert;F. Gygi;M. Cococcioni;N. Marzari
影响因子:
5.5
作者:
Stefan Ringe;H. Oberhofer;C. Hille;S. Matera;K. Reuter
通讯作者:
Stefan Ringe;H. Oberhofer;C. Hille;S. Matera;K. Reuter
影响因子:
2.9
作者:
CHURG, AK;WARSHEL, A
通讯作者:
WARSHEL, A