Tip-induced creation and Jahn-Teller distortions of sulfur vacancies in single-layer MoS2
Jansen, Daniel; Tounsi, Tfyeche; Fischer, Jeison; Krasheninnikov, Arkady V.; Michely, Thomas; Komsa, Hannu-Pekka; Jolie, Wouter (2024-05-24)
American physical society
24.05.2024
Jansen, D., Tounsi, T., Fischer, J., Krasheninnikov, A. V., Michely, T., Komsa, H.-P., & Jolie, W. (2024). Tip-induced creation and Jahn-Teller distortions of sulfur vacancies in single-layer MoS 2. Physical Review B, 109(19), 195430. https://doi.org/10.1103/PhysRevB.109.195430.
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©2024 American Physical Society
https://rightsstatements.org/vocab/InC/1.0/
©2024 American Physical Society
https://rightsstatements.org/vocab/InC/1.0/
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:oulu-202406274983
https://urn.fi/URN:NBN:fi:oulu-202406274983
Tiivistelmä
Abstract
We present an atomically precise technique to create sulfur vacancies and control their atomic configurations in single-layer MoS2. It involves adsorbed Fe atoms and the tip of a scanning tunneling microscope, which enables single sulfur removal from the top sulfur layer at the initial position of Fe. Using scanning tunneling spectroscopy, we show that the STM tip can also induce two Jahn-Teller distorted states with reduced orbital symmetry in the sulfur vacancies. Density functional theory calculations rationalize our experimental results. Additionally, we provide evidence for molecule-like hybrid orbitals in artificially created sulfur vacancy dimers, which illustrates the potential of our technique for the development of extended defect lattices and tailored electronic band structures.
We present an atomically precise technique to create sulfur vacancies and control their atomic configurations in single-layer MoS2. It involves adsorbed Fe atoms and the tip of a scanning tunneling microscope, which enables single sulfur removal from the top sulfur layer at the initial position of Fe. Using scanning tunneling spectroscopy, we show that the STM tip can also induce two Jahn-Teller distorted states with reduced orbital symmetry in the sulfur vacancies. Density functional theory calculations rationalize our experimental results. Additionally, we provide evidence for molecule-like hybrid orbitals in artificially created sulfur vacancy dimers, which illustrates the potential of our technique for the development of extended defect lattices and tailored electronic band structures.
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