Sulfur-vacancy-tunable interlayer magnetic coupling in centimeter-scale MoS2 bilayer

Endowing bilayer transition-metal dichalcogenides (TMDs) with tunable magnetism is significant to investigate the coupling of multiple electron degrees of freedom (DOFs). However, effectively inducing and tuning the magnetic interaction of bilayer TMDs are still challenges. Herein, we report a strat...

Full description

Saved in:
Bibliographic Details
Published in:Nano research 2022-02, Vol.15 (2), p.881-888
Main Authors: Duan, Hengli, Li, Guinan, Tan, Hao, Wang, Chao, Li, Qian, Liu, Chuanchuan, Yin, Yuewei, Li, Xiaoguang, Qi, Zeming, Yan, Wensheng
Format: Article
Language:English
Subjects:
Antiferromagnetism
Atomic/Molecular Structure and Spectra
Biomedicine
Biotechnology
Chemistry and Materials Science
Condensed Matter Physics
Coupling
Exchanging
Ferromagnetism
Hybridization
Interlayers
Magnetic materials
Magnetic measurement
Magnetism
Materials Science
Molybdenum disulfide
Nanotechnology
Research Article
Sulfur
Transition metal compounds
Tuning
Vacancies
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Endowing bilayer transition-metal dichalcogenides (TMDs) with tunable magnetism is significant to investigate the coupling of multiple electron degrees of freedom (DOFs). However, effectively inducing and tuning the magnetic interaction of bilayer TMDs are still challenges. Herein, we report a strategy to tune the interlayer exchange interaction of centimeter-scale MoS 2 bilayer with substitutional doping of Co ion, by introducing sulfur vacancy (V S ) to modulate the interlayer electronic coupling. This strategy could transform the interlayer exchange interaction from antiferromagnetism (AFM) to ferromagnetism (FM), as revealed by the magnetic measurements. Experimental characterizations and theoretical calculations indicate that the enhanced magnetization is mainly because the hybridization of Co 3d band and V S -induced impurity band alters the forms of interlayer orbital hybridizations between the partial Co atoms in upper and lower layers, and also enhances the intralayer FM. Our work paves the way for tuning the interlayer exchange interaction with defects and could be extended to other two-dimensional (2D) magnetic materials.
ISSN:1998-0124
1998-0000
DOI:10.1007/s12274-021-3569-7