Journal Article

FZJ-2024-06985

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Engineering 2D Materials from Single‐Layer NbS 2

Knispel, T. ; Mohrenstecher, D. ; Speckmann, C. ; Safeer, A. ; van Efferen, C. ; Boix, V. ; Grüneis, A. ; Jolie, W. ; Preobrajenski, A. ; Knudsen, J. ; Atodiresei, N.FZJ* ; Michely, T. ; Fischer, J. (Corresponding author)

2025
Wiley-VCH Weinheim

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Please use a persistent id in citations: doi:10.1002/smll.202408044  doi:10.34734/FZJ-2024-06985

Abstract: Starting from a single layer of NbS2 grown on graphene by molecular beam epitaxy, the single unit cell thick 2D materials Nb5/3S3-2D and Nb2S3-2D are created using two different pathways. Either annealing under sulfur-deficient conditions at progressively higher temperatures or deposition of increasing amounts of Nb at elevated temperature result in phase-pure Nb5/3S3-2D followed by Nb2S3-2D. The materials are characterized by scanning tunneling microscopy, scanning tunneling spectroscopy, and X-ray photoemission spectroscopy. The experimental assessment combined with systematic density functional theory calculations reveals their structure. The 2D materials are covalently bound without any van der Waals gap. Their stacking sequence and structure are at variance with expectations based on corresponding bulk materials highlighting the importance of surface and interface effects in structure formation.

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Contributing Institute(s):

1. Quanten-Theorie der Materialien (PGI-1)

Research Program(s):

1. 5211 - Topological Matter (POF4-521) (POF4-521)
2. SFB 1238 B06 - Rastertunnelspektroskopie (B06) (319897474) (319897474)
3. SFB 1238 C01 - Strukturinversionsasymmetrische Materie und Spin-Orbit-Phänomene mittels ab initio (C01) (319898210) (319898210)
4. SFB 1238 A01 - Konstruktion von 2D-Heterostrukturen für die Kontrolle elektronischer, optischer und magnetischer Eigenschaften (A01) (319464028) (319464028)
5. DFG project G:(GEPRIS)535290457 - Gezielte Herstellung von Vielteilchenzuständen in zweidimensionalen van-der-Waals-Heterostrukturen (535290457) (535290457)
6. DFG project G:(GEPRIS)462692705 - Antiskyrmionen auf Oberflächen durch anisotrope Dzyaloshinskii-Moriya-Wechselwirkungen (462692705) (462692705)

Appears in the scientific report 2025

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DEAL Wiley ; Essential Science Indicators ; IF >= 10 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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