Journal Article

FZJ-2022-02353

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Boron nitride on SiC(0001)

Lin, Y.-R. ; Franke, M. ; Parhizkar, S. ; Raths, M.FZJ* ; Wen-zhe Yu, V. ; Lee, T.-L. ; Soubatch, S. ; Blum, V. ; Tautz, F. S.FZJ* ; Kumpf, C.FZJ* ; Bocquet, F. C. (Corresponding author)FZJ*

2022
APS College Park, MD

This record in other databases:    

Please use a persistent id in citations: http://hdl.handle.net/2128/31280  doi:10.1103/PhysRevMaterials.6.064002

Abstract: In the field of van der Waals heterostructures, the twist angle between stacked two-dimensional layers has been identified to be of utmost importance for the properties of the heterostructures. In this context, we previously reported the growth of a single layer of unconventionally oriented epitaxial graphene that forms in a surfactant atmosphere [F. C. Bocquet et al., Phys. Rev. Lett. 125, 106102 (2020)]. The resulting G-R0∘ layer is aligned with the SiC lattice, and hence represents an important milestone towards high-quality twisted bilayer graphene, a frequently investigated model system in this field. Here, we focus on the surface structures obtained in the same surfactant atmosphere, but at lower preparation temperatures at which a boron nitride template layer forms on SiC(0001). In a comprehensive study based on complementary experimental and theoretical techniques, we find—in contrast to the literature—that this template layer is a hexagonal BxNy layer, but not high-quality hBN. It is aligned with the SiC lattice and gradually replaced by low-quality graphene in the 0∘ orientation of the BxNy template layer upon annealing.

---

Contributing Institute(s):

1. Quantum Nanoscience (PGI-3)

Research Program(s):

1. 5213 - Quantum Nanoscience (POF4-521) (POF4-521)
2. DFG project 396769409 - Grundlagen der Photoemissionstomographie (396769409)

Appears in the scientific report 2022

---

Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

---