Dresden 2020 – scientific programme

The DPG Spring Meeting in Dresden had to be cancelled! Read more ...

Parts | Days | Selection | Search | Updates | Downloads | Help

CPP: Fachverband Chemische Physik und Polymerphysik

CPP 67: 2D Materials IV: Interfacial Interactions (joint session O/CPP/HL)

CPP 67.4: Talk

Wednesday, March 18, 2020, 11:15–11:30, WIL B321

Complex moiré structures in rotated monolayer V₂S₃ on Au(111) — •Umut Kamber¹, Sahar Pakdel², Raluca-Maria Stan², Anand Kamlapure¹, Brian Kiraly¹, Fabian Arnold², Andreas Eich¹, Arlette S. Ngankeu², Marco Bianchi², Jill A. Miwa², Charlotte Sanders², Nicola Lanata², Philip Hofmann², and Alexander A. Khajetoorians¹ — ¹Institute for Molecules and Materials, Radboud University, Nijmegen, The Netherlands — ²Department of Physics and Astronomy, Interdisciplinary Nanoscience Center, Aarhus University, Aarhus, Denmark

Moiré superlattices have led to the emergence of tunable many-body states of matter like superconductivity and Mott insulator states absent in the individual layers [1,2]. For transition metal dichalcogenides (TMDCs), there has been a strong interest in how electronic structure is modified near the single layer limit and potentially affected by the dielectric environment. Here, we show spatially periodic modifications to the electronic structure of single layer V₂S₃ grown on Au(111) varying with the underlying moiré pattern [3]. Similar modifications were observed in multiple moiré patterns, each arising from a different relative orientation between the monolayer and the Au(111) substrate. We characterize these spatial variations in electronic structure with respect to the atomic and moiré lattices via scanning tunneling microscopy and spectroscopy, with the help of ab initio calculations.

[1] Y. Cao et al., Nature, 556, 43 (2018).

[2] Y. Cao et al., Nature, 556, 80 (2018).

[3] F. Arnold et al., 2D Mater. 5, 045009 (2018).