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- W4200395393 abstract "In recent years, the discovery of 'magic angle' graphene has given new inspiration to the formation of heterojunctions. Similarly, the use of hexagonal boron nitride, known as white graphene, as a substrate for graphene devices has more aroused great interest in the graphene/hexagonal boron nitride heterostructure system. Based on the first principles method of density functional theory, the band structure, density of states, Mulliken population, and differential charge density of a tightly packed model of twisted graphene/hexagonal boron nitride/graphene sandwich structure have been studied. Through the establishment of heterostructure models twisted bilayer-graphene inserting hBN with different twisted angles, it was found that the band gap, Mulliken population, and charge density, exhibited specific evolution regulars with the rotation angle of the upper graphene, showing novel electronic properties and realizing metal-insulator phase transition. We find that the particular value of the twist angle at which the metal-insulator phase transition occurs and propose a rotational regulation mechanism with angular periodicity. Our results have guiding significance for the practical application of heterojunction electronic devices." @default.
- W4200395393 created "2021-12-31" @default.
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- W4200395393 date "2022-01-07" @default.
- W4200395393 modified "2023-09-30" @default.
- W4200395393 title "First-principles study on the heterostructure of twisted graphene/hexagonal boron nitride/graphene sandwich structure" @default.
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- W4200395393 doi "https://doi.org/10.1088/1361-648x/ac45b5" @default.
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