Universität zu Köln

Safeer, Affan ORCID: 0000-0002-6882-0596, Ghorbani‐Asl, Mahdi ORCID: 0000-0003-3060-4369, Jolie, Wouter ORCID: 0000-0001-9319-3427, Krasheninnikov, Arkady V. ORCID: 0000-0003-0074-7588, Michely, Thomas ORCID: 0000-0003-1657-1847 and Fischer, Jeison ORCID: 0000-0003-3538-1926 (2025). Which Chromium–Sulfur Compounds Exist as 2D Material? Advanced Functional Materials, 35 (49). pp. 1-13. Wiley. ISSN 1616-301X

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Abstract

[Artikel-Nr.: e00907] 2D chromium‐sulfides are synthesized by molecular beam epitaxy using graphene as a substrate. Structure characterization by employing scanning tunneling microscopy and low energy electron diffraction indicates that there are two 2D phases, Cr 2 S 3 ‐2D and 4 ‐2D, which have not been reported before. 4 ‐2D is related to bulk Cr 5 S 6 , but thinner than a bulk unit cell. For Cr 2 S 3 ‐2D, an even thinner material, no bulk counterpart exists. Both 2D materials are found to be structurally stable under ambient conditions and exhibit interesting electronic properties. Extensive first‐principles calculations provide further insight into the electronic structure of these systems and indicate that they should be magnetic. Although single layers of CrS 2 are predicted to be stable by density functional theory calculations and reported in previous experimental studies, CrS 2 is unable to synthesize under the range of experimental conditions.

Item Type:	Article
Creators:	Creators Email ORCID ORCID Put Code Safeer, Affan UNSPECIFIED https://orcid.org/0000-0002-6882-0596 UNSPECIFIED Ghorbani‐Asl, Mahdi UNSPECIFIED https://orcid.org/0000-0003-3060-4369 UNSPECIFIED Jolie, Wouter UNSPECIFIED https://orcid.org/0000-0001-9319-3427 UNSPECIFIED Krasheninnikov, Arkady V. UNSPECIFIED https://orcid.org/0000-0003-0074-7588 UNSPECIFIED Michely, Thomas UNSPECIFIED https://orcid.org/0000-0003-1657-1847 UNSPECIFIED Fischer, Jeison UNSPECIFIED https://orcid.org/0000-0003-3538-1926 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-801827
Identification Number:	10.1002/adfm.202500907
Journal or Publication Title:	Advanced Functional Materials
Volume:	35
Number:	49
Page Range:	pp. 1-13
Number of Pages:	13
Date:	3 December 2025
Publisher:	Wiley
ISSN:	1616-301X
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Physics > Institute of Physics II
Subjects:	Physics
['eprint_fieldname_oa_funders' not defined]:	Publikationsfonds UzK
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/80182