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van der Waals Metallic Transition Metal Dichalcogenides
Gang Hee Han1,2, Dinh Loc Duong1,2, Dong Hoon Keum1,2
1Center for Integrated Nanostructure Physics (CINAP) , Institute for Basic Science (IBS) , Suwon 16419 , Republic of Korea.
Metallic transition metal dichalcogenides exhibit diverse condensed matter properties. This review focuses on their structures, synthesis, and unique physical phenomena like superconductivity and topological states.
Area of Science:
- Materials Science
- Condensed Matter Physics
Background:
- Transition metal dichalcogenides (TMDs) are layered materials with diverse electronic properties, including metallic behavior.
- While semiconducting TMDs are well-studied, metallic TMDs offer unique phenomena.
Purpose of the Study:
- To review the structures and synthesis of metallic transition metal dichalcogenides.
- To update understanding of their band structures, physical properties, and potential applications.
Main Methods:
- Conventional synthesis methods like chemical vapor transport and deposition.
- Material modification techniques including Li intercalation, irradiation, and strain engineering.
Main Results:
- Discussion of band structures and their layer-dependence in metallic TMDs.
- Overview of physical properties: periodic lattice distortion, magnetoresistance, superconductivity, topological insulator, and Weyl semimetal states.
Conclusions:
- Metallic TMDs present a rich platform for exploring exotic condensed matter physics.
- Further research is needed to overcome current challenges and unlock their full potential.
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