期刊
ADVANCED SCIENCE
卷 9, 期 1, 页码 -出版社
WILEY
DOI: 10.1002/advs.202103170
关键词
correlated physical performances; graphene-based moire heterostructures; topological properties; twist angles; twistronics
资金
- National Natural Science Foundation of China [22021002]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDB30000000]
- Beijing National Laboratory for Molecular Sciences [BNLMS-CXXM-202101]
Graphene-based moire heterostructures are important for studying condensed matter physics, especially unconventional superconductors. Key aspects include preparation methods, quality improvement, and topological properties. Physical performances are influenced by factors such as twist angle, strain, and regulation of the dielectric environment.
Graphene-based moire heterostructures are strongly correlated materials, and they are considered to be an effective platform to investigate the challenges of condensed matter physics. This is due to the distinct electronic properties that are unique to moire superlattices and peculiar band structures. The increasing research on strongly correlated physics via graphene-based moire heterostructures, especially unconventional superconductors, greatly promotes the development of condensed matter physics. Herein, the preparation methods of graphene-based moire heterostructures on both in situ growth and assembling monolayer 2D materials are discussed. Methods to improve the quality of graphene and optimize the transfer process are presented to mitigate the limitations of low-quality graphene and damage caused by the transfer process during the fabrication of graphene-based moire heterostructures. Then, the topological properties in various graphene-based moire heterostructures are reviewed. Furthermore, recent advances regarding the factors that influence physical performances via a changing twist angle, the exertion of strain, and regulation of the dielectric environment are presented. Moreover, various unique physical properties in graphene-based moire heterostructures are demonstrated. Finally, the challenges faced during the preparation and characterization of graphene-based moire heterostructures are discussed. An outlook for the further development of moire heterostructures is also presented.
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