Universität zu Köln

Safeer, Affan ORCID: 0000-0002-6882-0596, Güleryüz, Oktay, Atodiresei, Nicolae ORCID: 0000-0002-8203-1227, Jolie, Wouter ORCID: 0000-0001-9319-3427, Michely, Thomas ORCID: 0000-0003-1657-1847 and Fischer, Jeison ORCID: 0000-0003-3538-1926 (2026). MnBr2 on the Graphene on Ir(110) Substrate: Growth, Structure, and Super‐Moiré. Small, 22 (11). pp. 1-15. Wiley. ISSN 1613-6810

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Abstract

[Artikel-Nr.: e09471] Single‐layer is grown on graphene (Gr) supported by Ir(110) and investigated using low‐energy electron diffraction, scanning tunneling microscopy, and spectroscopy. The structure and epitaxial relationship with the substrate are systematically characterized. The growth morphology strongly depends on the growth temperature, evolving from fractal to dendritic and eventually to compact dendritic–skeletal islands, reflecting changes in the underlying surface diffusion processes. The pronounced variation in the apparent height with tunneling conditions for the magnetic insulator is explained based on the measured electronic density of states. on Gr/Ir(110) constitutes a three‐lattice system, giving rise to a super‐moiré pattern – a moiré of moirés. The super‐moiré of /Gr/Ir(110) is unique, as it involves a virtual moiré of with the Ir(110) surface lattice – two lattices not in contact with each other. Using a careful Fourier analysis, the known properties of Gr/Ir(110), and the results of ab initio calculations, the origin of the virtual moiré is uncovered and related to the inhomogeneous binding of Gr to Ir(110). Comparative experiments with on Gr/Ir(111) show similar growth and structure, but highlight the unique properties of the /Gr/Ir(110) super‐moiré.

Item Type:	Article
Creators:	Creators Email ORCID ORCID Put Code Safeer, Affan UNSPECIFIED https://orcid.org/0000-0002-6882-0596 UNSPECIFIED Güleryüz, Oktay UNSPECIFIED UNSPECIFIED UNSPECIFIED Atodiresei, Nicolae UNSPECIFIED https://orcid.org/0000-0002-8203-1227 UNSPECIFIED Jolie, Wouter UNSPECIFIED https://orcid.org/0000-0001-9319-3427 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:38-813010
Identification Number:	10.1002/smll.202509471
Journal or Publication Title:	Small
Volume:	22
Number:	11
Page Range:	pp. 1-15
Number of Pages:	15
Date:	5 February 2026
Publisher:	Wiley
ISSN:	1613-6810
Language:	English
Faculty:	External institution Faculty of Mathematics and Natural Sciences
Divisions:	Außeruniversitäre Forschungseinrichtungen > Forschungszentrum Jülich Faculty of Mathematics and Natural Sciences > Department of Physics > Institute of Physics II
Subjects:	Physics
Uncontrolled Keywords:	Keywords Language super-moiré ; moiré ; of moiré ; manganese bromide ; transition metal dihalides ; MnBr2 ; 2D magnetic material English
['eprint_fieldname_oa_funders' not defined]:	Publikationsfonds UzK
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/81301