TY - JOUR
T1 - Electronic structure of 3°-twisted bilayer graphene on 4H-SiC(0001)
AU - Iimori, Takushi
AU - Visikovskiy, Anton
AU - Imamura, Hitoshi
AU - Miyamachi, Toshio
AU - Kitamura, Miho
AU - Horiba, Koji
AU - Kumigashira, Hiroshi
AU - Mase, Kazuhiko
AU - Nakatsuji, Kan
AU - Tanaka, Satoru
AU - Komori, Fumio
N1 - Publisher Copyright:
© 2021 American Physical Society.
PY - 2021/5
Y1 - 2021/5
N2 - The electronic structure of 3°-twisted bilayer graphene (TBG) is studied by angle-resolved photoelectron spectroscopy (ARPES). Sub-mm-sized TBG prepared by direct bonding in a high vacuum enabled us to use conventional ARPES band mapping with synchrotron light. The results indicate that strong interlayer coupling makes a moiré potential for the Dirac electrons and significantly modifies the graphene bands around the K̄ points such as the band splitting and electron velocity reduction. The observed electronic structure is consistently reproduced by tight-binding calculations combined with a band unfolding method.
AB - The electronic structure of 3°-twisted bilayer graphene (TBG) is studied by angle-resolved photoelectron spectroscopy (ARPES). Sub-mm-sized TBG prepared by direct bonding in a high vacuum enabled us to use conventional ARPES band mapping with synchrotron light. The results indicate that strong interlayer coupling makes a moiré potential for the Dirac electrons and significantly modifies the graphene bands around the K̄ points such as the band splitting and electron velocity reduction. The observed electronic structure is consistently reproduced by tight-binding calculations combined with a band unfolding method.
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U2 - 10.1103/PhysRevMaterials.5.L051001
DO - 10.1103/PhysRevMaterials.5.L051001
M3 - Article
AN - SCOPUS:85106383522
SN - 2475-9953
VL - 5
JO - Physical Review Materials
JF - Physical Review Materials
IS - 5
M1 - L051001
ER -