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@ARTICLE{Zhu:867953,
author = {Zhu, Min and Cojocaru-Mirédin, Oana and Mio, Antonio M.
and Keutgen, Jens and Küpers, Michael and Yu, Yuan and Cho,
Ju-Young and Dronskowski, Richard and Wuttig, Matthias},
title = {{U}nique {B}ond {B}reaking in {C}rystalline {P}hase
{C}hange {M}aterials and the {Q}uest for {M}etavalent
{B}onding},
journal = {Advanced materials},
volume = {30},
number = {18},
issn = {0935-9648},
address = {Weinheim},
publisher = {Wiley-VCH},
reportid = {FZJ-2019-06546},
pages = {1706735 -},
year = {2018},
abstract = {Laser‐assisted field evaporation is studied in a large
number of compounds, including amorphous and crystalline
phase change materials employing atom probe tomography. This
study reveals significant differences in field evaporation
between amorphous and crystalline phase change materials.
High probabilities for multiple events with more than a
single ion detected per laser pulse are only found for
crystalline phase change materials. The specifics of this
unusual field evaporation are unlike any other mechanism
shown previously to lead to high probabilities of multiple
events. On the contrary, amorphous phase change materials as
well as other covalently bonded compounds and metals possess
much lower probabilities for multiple events. Hence,
laser‐assisted field evaporation in amorphous and
crystalline phase change materials reveals striking
differences in bond rupture. This is indicative for
pronounced differences in bonding. These findings imply that
the bonding mechanism in crystalline phase change materials
differs substantially from conventional bonding mechanisms
such as metallic, ionic, and covalent bonding. Instead, the
data reported here confirm a recently developed conjecture,
namely that metavalent bonding is a novel bonding mechanism
besides those mentioned previously.},
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:29572962},
UT = {WOS:000431615100017},
doi = {10.1002/adma.201706735},
url = {https://juser.fz-juelich.de/record/867953},
}