Unraveling the growth mechanism of single-domain molybdenum disulfide on Au(111)
- As a transition metal dichalcogenide single-layer molybdenum disulfide (MoS2) is a heavily investigated system. Due to its direct band gap, the electronic properties of single-layer MoS2 have been subject to several surface science methods. A well-known model system is MoS2 on Au(111). We present in situ low-energy electron microscopy (LEEM) and micro-diffraction (LEED) observations of MoS2 growth on Au(111) at elevated temperature using two distinctly different deposition rates. Our investigations reveal similar but different expansion mechanisms of the MoS2 islands changing a balanced distribution of the two mirror domains towards a single domain distribution. Structural characterization by I(V)-LEEM and investigations of the electronic bandstructure using angle-resolved photoelectron spectroscopy both confirm single-layer nature of the MoS2 islands. We could identify step pushing of the growing MoS2 being responsible for this phenomena.
Author: | Moritz EwertORCiD, Lars BußORCiD, Paolo MorasORCiD, Jens FaltaORCiD, Jan Ingo FlegeORCiD |
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URL: | https://www.dpg-verhandlungen.de/year/2019/conference/regensburg/part/o/session/35/contribution/6 |
ISSN: | 0420-0195 |
Title of the source (German): | Verhandlungen der DPG |
Publisher: | Deutsche Physikalische Gesellschaft |
Place of publication: | Bad Honnef |
Document Type: | Conference publication not peer-reviewed |
Language: | English |
Year of publication: | 2019 |
Tag: | I(V)-LEEM; investigations of the electronic bandstructure using angle-resolved photoelectron spectroscopy; low-energy electron microscopy (LEEM); micro-diffraction (LEED) |
First Page: | 329 |
Last Page: | 329 |
Series ; volume number: | Verhandlungen der DPG (VI) ; 54,4 |
Faculty/Chair: | Fakultät 1 MINT - Mathematik, Informatik, Physik, Elektro- und Informationstechnik / FG Angewandte Physik und Halbleiterspektroskopie |