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Open access
Nature Communications, volume 6, issue 1, publication number 6736

Three-fold rotational defects in two-dimensional transition metal dichalcogenides

Lin Yung‐Chang 1
Björkman Torbjörn 2
Komsa Hannu Pekka 2
Teng Po-Yuan 3
Yeh Chao Hui 3
Huang Fei Sheng 4
Lin Kuan-Hung 4
Jadczak Joanna 5
Huang Ying-Sheng 4
Chiu Po-Wen 3
Krasheninnikov Arkady V 6
Kazu Suenaga 1
Publication typeJournal Article
Publication date2015-04-02
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor16.6
ISSN20411723
PubMed ID:  25832503
General Chemistry
General Biochemistry, Genetics and Molecular Biology
General Physics and Astronomy
Abstract
As defects frequently govern the properties of crystalline solids, the precise microscopic knowledge of defect atomic structure is of fundamental importance. We report a new class of point defects in single-layer transition metal dichalcogenides that can be created through 60° rotations of metal–chalcogen bonds in the trigonal prismatic lattice, with the simplest among them being a three-fold symmetric trefoil-like defect. The defects, which are inherently related to the crystal symmetry of transition metal dichalcogenides, can expand through sequential bond rotations, as evident from in situ scanning transmission electron microscopy experiments, and eventually form larger linear defects consisting of aligned 8–5–5–8 membered rings. First-principles calculations provide insights into the evolution of rotational defects and show that they give rise to p-type doping and local magnetic moments, but weakly affect mechanical characteristics of transition metal dichalcogenides. Thus, controllable introduction of rotational defects can be used to engineer the properties of these materials. Defects in a crystalline solid can have a dramatic effect on the material’s properties. Here, the authors demonstrate a class of defects in two-dimensional transition metal dichalcogenides mediated by chalcogen vacancies and inherently related to the crystal symmetry

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Lin Y. et al. Three-fold rotational defects in two-dimensional transition metal dichalcogenides // Nature Communications. 2015. Vol. 6. No. 1. 6736
GOST all authors (up to 50) Copy
Lin Y., Björkman T., Komsa H. P., Teng P., Yeh C. H., Huang F. S., Lin K., Jadczak J., Huang Y., Chiu P., Krasheninnikov A. V., Kazu S. Three-fold rotational defects in two-dimensional transition metal dichalcogenides // Nature Communications. 2015. Vol. 6. No. 1. 6736
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RIS Copy
TY - JOUR
DO - 10.1038/ncomms7736
UR - https://doi.org/10.1038%2Fncomms7736
TI - Three-fold rotational defects in two-dimensional transition metal dichalcogenides
T2 - Nature Communications
AU - Lin, Yung‐Chang
AU - Björkman, Torbjörn
AU - Komsa, Hannu Pekka
AU - Teng, Po-Yuan
AU - Yeh, Chao Hui
AU - Huang, Fei Sheng
AU - Lin, Kuan-Hung
AU - Jadczak, Joanna
AU - Huang, Ying-Sheng
AU - Chiu, Po-Wen
AU - Krasheninnikov, Arkady V
AU - Kazu, Suenaga
PY - 2015
DA - 2015/04/02 00:00:00
PB - Springer Nature
IS - 1
VL - 6
PMID - 25832503
SN - 2041-1723
ER -
BibTex
Cite this
BibTex Copy
@article{2015_Lin
author = {Yung‐Chang Lin and Torbjörn Björkman and Hannu Pekka Komsa and Po-Yuan Teng and Chao Hui Yeh and Fei Sheng Huang and Kuan-Hung Lin and Joanna Jadczak and Ying-Sheng Huang and Po-Wen Chiu and Arkady V Krasheninnikov and Suenaga Kazu},
title = {Three-fold rotational defects in two-dimensional transition metal dichalcogenides},
journal = {Nature Communications},
year = {2015},
volume = {6},
publisher = {Springer Nature},
month = {apr},
url = {https://doi.org/10.1038%2Fncomms7736},
number = {1},
doi = {10.1038/ncomms7736}
}
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