Show simple item record

dc.contributor.authorLopatin, Sergei
dc.contributor.authorAljarb, Areej
dc.contributor.authorRoddatis, Vladimir
dc.contributor.authorMeyer, Tobias
dc.contributor.authorWan, Yi
dc.contributor.authorFu, Jui-Han
dc.contributor.authorHedhili, Mohamed N.
dc.contributor.authorHan, Yimo
dc.contributor.authorLi, Lain-Jong
dc.contributor.authorTung, Vincent
dc.date.accessioned2020-09-13T06:12:17Z
dc.date.available2020-09-13T06:12:17Z
dc.date.issued2020-09-09
dc.date.submitted2020-04-05
dc.identifier.citationLopatin, S., Aljarb, A., Roddatis, V., Meyer, T., Wan, Y., Fu, J.-H., … Tung, V. (2020). Aberration-corrected STEM imaging of 2D materials: Artifacts and practical applications of threefold astigmatism. Science Advances, 6(37), eabb8431. doi:10.1126/sciadv.abb8431
dc.identifier.issn2375-2548
dc.identifier.pmid32917685
dc.identifier.doi10.1126/sciadv.abb8431
dc.identifier.urihttp://hdl.handle.net/10754/665075
dc.description.abstractHigh-resolution scanning transmission electron microscopy (HR-STEM) with spherical aberration correction enables researchers to peer into two-dimensional (2D) materials and correlate the material properties with those of single atoms. The maximum intensity of corrected electron beam is confined in the area having sub-angstrom size. Meanwhile, the residual threefold astigmatism of the electron probe implies a triangular shape distribution of the intensity, whereas its tails overlap and thus interact with several atomic species simultaneously. The result is the resonant modulation of contrast that interferes the determination of phase transition of 2D materials. Here, we theoretically reveal and experimentally determine the origin of resonant modulation of contrast and its unintended impact on violating the power-law dependence of contrast on coordination modes between transition metal and chalcogenide atoms. The finding illuminates the correlation between atomic contrast, spatially inequivalent chalcogenide orientation, and residual threefold astigmatism on determining the atomic structure of emerging 2D materials.
dc.description.sponsorshipV.T., A.A., and J.-H.F. are indebted to the support from the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under award no. OSR-2018-CARF/CCF-3079. V.T. acknowledges the support from User Proposals (nos. 5067 and 5424) at the Molecular Foundry, Lawrence Berkeley National Laboratory, supported by the Office of Basic Energy Sciences, of the U.S. Department of Energy under contract no. DE-AC02-05CH11231. The financial support from the Deutsche Forschungsgemeinschaft (DFG) via the CRC 1073 project Z02 and B02 is acknowledged.
dc.publisherAmerican Association for the Advancement of Science (AAAS)
dc.relation.urlhttps://advances.sciencemag.org/lookup/doi/10.1126/sciadv.abb8431
dc.rightsExclusive licensee American Association for the Advancement of Science. No claim to original U.S.Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0.
dc.rights.urihttps://creativecommons.org/licenses/by-nc/4.0/
dc.titleAberration-corrected STEM imaging of 2D materials: Artifacts and practical applications of threefold astigmatism
dc.typeArticle
dc.contributor.departmentElectron Microscopy
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentMaterial Science and Engineering
dc.contributor.departmentSurface Science
dc.identifier.journalScience Advances
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionDepartment of Physics, King Abdulaziz University, Jeddah 23955-6900, Saudi Arabia.
dc.contributor.institutionInstitute of Materials Physics, University of Goettingen, Goettingen, Germany.
dc.contributor.institution4th Institute of Physics - Solids and Nanostructures, University of Goettingen, Goettingen, Germany.
dc.contributor.institutionDepartment of Molecular Biology, Princeton University, NJ 08544-1044, USA.
dc.identifier.volume6
dc.identifier.issue37
dc.identifier.pageseabb8431
kaust.personLopatin, Sergei
kaust.personAljarb, Areej
kaust.personAljarb, Areej
kaust.personWan, Yi
kaust.personFu, Jui-Han
kaust.personFu, Jui-Han
kaust.personHedhili, Mohamed N.
kaust.personLi, Lain-Jong
kaust.personTung, Vincent
kaust.personTung, Vincent
kaust.grant.numberOSR-2018-CARF/CCF-3079
dc.date.accepted2020-07-28
refterms.dateFOA2020-09-13T06:12:48Z
kaust.acknowledged.supportUnitCCF
kaust.acknowledged.supportUnitOffice of Sponsored Research (OSR)
dc.date.published-online2020-09-09
dc.date.published-print2020-09


Files in this item

Thumbnail
Name:
eabb8431.full.pdf
Size:
1.010Mb
Format:
PDF
Description:
Published version

This item appears in the following Collection(s)

Show simple item record

Exclusive licensee American Association for the Advancement of Science. No claim to original U.S.Government Works. Distributed
under a Creative Commons Attribution NonCommercial License 4.0.
Except where otherwise noted, this item's license is described as Exclusive licensee American Association for the Advancement of Science. No claim to original U.S.Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0.