Universität zu Köln

Silva, Caio C., Dombrowski, Daniela, Atodiresei, Nicolae, Jolie, Wouter, zum Hagen, Ferdinand Farwick, Cai, Jiaqi, Ryan, Paul T. P., Thakur, Pardeep K., Caciuc, Vasile, Blugel, Stefan, Duncan, David A., Michely, Thomas ORCID: 0000-0003-1657-1847, Lee, Tien-Lin and Busse, Carsten ORCID: 0000-0001-5522-0578 (2022). Spatial variation of geometry, binding, and electronic properties in the moire superstructure of MoS2 on Au(111). 2D Mater., 9 (2). BRISTOL: IOP Publishing Ltd. ISSN 2053-1583

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Abstract

The lattice mismatch between a monolayer of MoS2 and its Au(111) substrate induces a moire superstructure. The local variation of the registry between sulfur and gold atoms at the interface leads to a periodic pattern of strongly and weakly interacting regions. In consequence, also the electronic bands show a spatial variation. We use scanning tunneling microscopy and spectroscopy (STM/STS), x-ray photoelectron spectroscopy (XPS) and x-ray standing wave (XSW) for a determination of the geometric and electronic structure. The experimental results are corroborated by density functional theory. We obtain the geometric structure of the supercell with high precision, identify the fraction of interfacial atoms that are strongly interacting with the substrate, and analyze the variation of the electronic structure in dependence of the location within the moire unit cell and the nature of the band.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Silva, Caio C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Dombrowski, Daniela UNSPECIFIED UNSPECIFIED UNSPECIFIED Atodiresei, Nicolae UNSPECIFIED UNSPECIFIED UNSPECIFIED Jolie, Wouter UNSPECIFIED UNSPECIFIED UNSPECIFIED zum Hagen, Ferdinand Farwick UNSPECIFIED UNSPECIFIED UNSPECIFIED Cai, Jiaqi UNSPECIFIED UNSPECIFIED UNSPECIFIED Ryan, Paul T. P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Thakur, Pardeep K. UNSPECIFIED UNSPECIFIED UNSPECIFIED Caciuc, Vasile UNSPECIFIED UNSPECIFIED UNSPECIFIED Blugel, Stefan UNSPECIFIED UNSPECIFIED UNSPECIFIED Duncan, David A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Michely, Thomas UNSPECIFIED orcid.org/0000-0003-1657-1847 UNSPECIFIED Lee, Tien-Lin UNSPECIFIED UNSPECIFIED UNSPECIFIED Busse, Carsten UNSPECIFIED orcid.org/0000-0001-5522-0578 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-685612
DOI:	10.1088/2053-1583/ac4958
Journal or Publication Title:	2D Mater.
Volume:	9
Number:	2
Date:	2022
Publisher:	IOP Publishing Ltd
Place of Publication:	BRISTOL
ISSN:	2053-1583
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SINGLE-LAYER MOS2; TRANSITION-METAL DICHALCOGENIDES; SURFACE-STRUCTURE DETERMINATION; GRAPHENE Multiple languages Materials Science, Multidisciplinary Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/68561