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@ARTICLE{Mser:129082,
author = {Müser, Martin},
title = {{T}he chemical hardness of molecules and the band gap of
solids within charge equilibration formalisms},
journal = {The European physical journal / B},
volume = {85},
number = {4},
issn = {1434-6036},
address = {Berlin},
publisher = {Springer},
reportid = {FZJ-2013-00604},
pages = {135},
year = {2012},
abstract = {This work finds that different charge equilibration methods
lead to qualitatively different responses of molecules and
solids to an excess charge. The investigated approaches are
the regular charge equilibration (QE), the atom-atom-charge
transfer (AACT), and the split-charge equilibration (SQE)
method. In QE, the hardness of molecules and the band gap of
solids approaches zero at large particle numbers, affirming
the claim that QE induces metallic behavior. AACT suffers
from producing negative values of the hardness; moreover
valence and conduction bands of solids cross. In contrast to
these methods, SQE can reproduce the generic behavior of
dielectric molecules or solids. Moreover, first quantitative
results for the NaCl molecule are promising. The results
derived in this work may have beneficial implications for
the modeling of redox reactions. They reveal that by
introducing formal oxidation states into force field-based
simulations it will become possible to simulate redox
reactions including non-equilibrium contact electrification,
voltage-driven charging of galvanic cells, and the formation
of zwitterionic molecules.},
cin = {JSC},
ddc = {530},
cid = {I:(DE-Juel1)JSC-20090406},
pnm = {411 - Computational Science and Mathematical Methods
(POF2-411)},
pid = {G:(DE-HGF)POF2-411},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000303545400008},
doi = {10.1140/epjb/e2012-21081-8},
url = {https://juser.fz-juelich.de/record/129082},
}