% IMPORTANT: The following is UTF-8 encoded. This means that in the presence % of non-ASCII characters, it will not work with BibTeX 0.99 or older. % Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or % “biber”. @ARTICLE{Borghardt:827368, author = {Borghardt, Sven and Winkler, Florian and Zanolli, Z. and Verstraete, M. J. and Barthel, Juri and Tavabi, A. H. and Dunin-Borkowski, Rafal and Kardynal, Beata}, title = {{Q}uantitative agreement between electron-optical phase images of {WS}e2 and simulations based on electrostatic potentials that include bonding effects}, journal = {Physical review letters}, volume = {118}, number = {8}, issn = {1079-7114}, address = {College Park, Md.}, publisher = {APS}, reportid = {FZJ-2017-01504}, pages = {086101}, year = {2017}, abstract = {The quantitative analysis of electron-optical phase images recorded using off-axis electron holography often relies on the use of computer simulations of electron propagation through a sample. However, simulations that make use of the independent atom approximation are known to overestimate experimental phase shifts by approximately $10\%,$ as they neglect bonding effects. Here, we compare experimental and simulated phase images for few-layer WSe2. We show that a combination of pseudopotentials and all-electron density functional theory calculations can be used to obtain accurate mean electron phases, as well as improved atomic-resolution spatial distribution of the electron phase. The comparison demonstrates a perfect contrast match between experimental and simulated atomic-resolution phase images for a sample of precisely known thickness. The low computational cost of this approach makes it suitable for the analysis of large electronic systems, including defects, substitutional atoms, and material interfaces.}, cin = {PGI-9 / PGI-5 / PGI-1 / ER-C-2 / ER-C-1 / JARA-HPC}, ddc = {550}, cid = {I:(DE-Juel1)PGI-9-20110106 / I:(DE-Juel1)PGI-5-20110106 / I:(DE-Juel1)PGI-1-20110106 / I:(DE-Juel1)ER-C-2-20170209 / I:(DE-Juel1)ER-C-1-20170209 / $I:(DE-82)080012_20140620$}, pnm = {524 - Controlling Collective States (POF3-524) / First principle calculations of transition metal dichalcogenides for spin-optoelectronics $(jpgi90_20150501)$ / Novel materials for nanoelectronics and spintronics: first principle investigation. $(jias16_20141101)$}, pid = {G:(DE-HGF)POF3-524 / $G:(DE-Juel1)jpgi90_20150501$ / $G:(DE-Juel1)jias16_20141101$}, typ = {PUB:(DE-HGF)16}, UT = {WOS:000394667600004}, pubmed = {pmid:28282203}, doi = {10.1103/PhysRevLett.118.086101}, url = {https://juser.fz-juelich.de/record/827368}, }