Xiang, Feifei; Huberich, Lysander; Vargas, Preston A.; Torsi, Riccardo; Allerbeck, Jonas; Tan, Anne Marie Z.; Dong, Chengye; Ruffieux, Pascal; Fasel, Roman; Gröning, Oliver; Lin, Yu-Chuan; Hennig, Richard G.; Robinson, Joshua A.; Schuler, Bruno (2024). Charge state-dependent symmetry breaking of atomic defects in transition metal dichalcogenides. Nature Communications, 15(1) Springer Nature 10.1038/s41467-024-47039-4
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24_Xiang_Nat._Commun._Charge_state-dependent_symmetry_breaking_of_atomic_defects_in_transition_metal_dichalcogenides.pdf - Published Version Available under License Creative Commons: Attribution (CC-BY). Download (3MB) | Preview |
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The functionality of atomic quantum emitters is intrinsically linked to their host lattice coordination. Structural distortions that spontaneously break the lattice symmetry strongly impact their optical emission properties and spin-photon interface. Here we report on the direct imaging of charge state-dependent symmetry breaking of two prototypical atomic quantum emitters in mono- and bilayer MoS2 by scanning tunneling microscopy (STM) and non-contact atomic force microscopy (nc-AFM). By changing the built-in substrate chemical potential, different charge states of sulfur vacancies (VacS) and substitutional rhenium dopants (ReMo) can be stabilized. Vac as well as Re and Re exhibit local lattice distortions and symmetry-broken defect orbitals attributed to a Jahn-Teller effect (JTE) and pseudo-JTE, respectively. By mapping the electronic and geometric structure of single point defects, we disentangle the effects of spatial averaging, charge multistability, configurational dynamics, and external perturbations that often mask the presence of local symmetry breaking.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
08 Faculty of Science > Department of Chemistry, Biochemistry and Pharmaceutical Sciences (DCBP) |
UniBE Contributor: |
Fasel, Roman |
Subjects: |
500 Science > 530 Physics 500 Science > 540 Chemistry |
ISSN: |
2041-1723 |
Publisher: |
Springer Nature |
Language: |
English |
Submitter: |
Roman Fasel |
Date Deposited: |
15 May 2024 11:48 |
Last Modified: |
15 May 2024 11:48 |
Publisher DOI: |
10.1038/s41467-024-47039-4 |
PubMed ID: |
38548739 |
BORIS DOI: |
10.48350/196766 |
URI: |
https://boris.unibe.ch/id/eprint/196766 |
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