Optical conductivity of twisted bilayer graphene near the magic angle*
نویسندگان
چکیده
We theoretically study the band structure and optical conductivity of twisted bilayer graphene (TBG) near magic angle considering effects lattice relaxation. show that spectrum is characterized by a series peaks associated with van Hove singularities in structure, peak energies evolve systematically twist angle. Lattice relaxation TBG modify its especially flat bands, which leads to significant shifts conductivity. These results demonstrate spectroscopic features can serve as fingerprints for exploring gap, magic-angle well identifying rotation
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ژورنال
عنوان ژورنال: Chinese Physics B
سال: 2021
ISSN: ['2058-3834', '1674-1056']
DOI: https://doi.org/10.1088/1674-1056/abb65d