Electric-field-tunable band gap in commensurate twisted bilayer graphene
نویسندگان
چکیده
Bernal bilayer graphene exhibits a band gap that is tunable through the infrared with an electric field. We show sublattice odd commensurate twisted (C-TBG) terahertz from perspective of optics and even forms C-TBG are "inflated" versions AA stacked respectively energy scales reduced by factor 110 for 21.79 degree unit cell. This lower scale accompanied correspondingly smaller gate voltage, which means strong-field regime more easily accessible than in case. Finally, we interlayer coherence directly experimental quantity position power-law divergence optical conductivity.
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ژورنال
عنوان ژورنال: Physical review
سال: 2023
ISSN: ['0556-2813', '1538-4497', '1089-490X']
DOI: https://doi.org/10.1103/physrevb.107.l041408