Moiré superlattices and 2D electronic properties of graphite/MoS2 heterostructures

Daniel J. Trainer, Aleksei V. Putilov, Baokai Wang, Christopher Lane, Timo Saari, Tay Rong Chang, Horng Tay Jeng, Hsin Lin, Xiaoxing Xi, Jouko Nieminen, Arun Bansil, Maria Iavarone

研究成果: Article同行評審

10 引文 斯高帕斯(Scopus)

摘要

Heterostructures of graphite/MoS2 display a wide range of lattice registry due to rotational alignment and/or lattice mismatch. Using high resolution scanning tunneling microscopy and spectroscopy (STM/STS) we investigated electronic properties of these heterostructures and observed changes in the bandgap as a function of the twist angle between the layers. Green's function based electronic structure calculations were carried out in order to shed light on the mechanism underlying the observed bandgap changes. Indirect coupling between the pz orbitals of the substrate Carbon atoms and the dz2 orbitals of the MoS2 layers (mediated by the pz orbitals of the bottom S layers) is found to be responsible for changes in the valence-band edge. Simple stacking of van der Waals materials with diverse properties have the potential to enable the fabrication of novel materials and device structures with tailored electronic properties.

原文English
頁(從 - 到)325-330
頁數6
期刊Journal of Physics and Chemistry of Solids
128
DOIs
出版狀態Published - 2019 5月

All Science Journal Classification (ASJC) codes

  • 化學 (全部)
  • 材料科學(全部)
  • 凝聚態物理學

指紋

深入研究「Moiré superlattices and 2D electronic properties of graphite/MoS2 heterostructures」主題。共同形成了獨特的指紋。

引用此