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@ARTICLE{Kooi:888211,
author = {Kooi, Bart J. and Wuttig, Matthias},
title = {{C}halcogenides by {D}esign: {F}unctionality through
{M}etavalent {B}onding and {C}onfinement},
journal = {Advanced materials},
volume = {32},
number = {21},
issn = {1521-4095},
address = {Weinheim},
publisher = {Wiley-VCH},
reportid = {FZJ-2020-04765},
pages = {1908302 -},
year = {2020},
abstract = {A unified picture of different application areas for
incipient metals is presented. This unconventional material
class includes several main‐group chalcogenides, such as
GeTe, PbTe, Sb2Te3, Bi2Se3, AgSbTe2 and Ge2Sb2Te5. These
compounds and related materials show a unique portfolio of
physical properties. A novel map is discussed, which helps
to explain these properties and separates the different
fundamental bonding mechanisms (e.g., ionic, metallic, and
covalent). The map also provides evidence for an
unconventional, new bonding mechanism, coined metavalent
bonding (MVB). Incipient metals, employing this bonding
mechanism, also show a special bond breaking mechanism. MVB
differs considerably from resonant bonding encountered in
benzene or graphite. The concept of MVB is employed to
explain the unique properties of materials utilizing it.
Then, the link is made from fundamental insights to
application‐relevant properties, crucial for the use of
these materials as thermoelectrics, phase change materials,
topological insulators or as active photonic components. The
close relationship of the materials' properties and their
application potential provides optimization schemes for
different applications. Finally, evidence will be presented
that for metavalently bonded materials interesting effects
arise in reduced dimensions. In particular, the consequences
for the crystallization kinetics of thin films and
nanoparticles will be discussed in detail.},
cin = {PGI-10},
ddc = {660},
cid = {I:(DE-Juel1)PGI-10-20170113},
pnm = {521 - Controlling Electron Charge-Based Phenomena
(POF3-521)},
pid = {G:(DE-HGF)POF3-521},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:32243014},
UT = {WOS:000523284500001},
doi = {10.1002/adma.201908302},
url = {https://juser.fz-juelich.de/record/888211},
}