@article{01c2f63e431b460fb94493728530dcee,
title = "Environmental effects on layer-dependent dynamics of Dirac fermions in quasicrystalline bilayer graphene",
abstract = "The carrier dynamics in various types of epitaxial graphene layers on SiC substrates was investigated by means of time- and angle-resolved photoemission spectroscopy (TARPES). Layer-dependent electron doping was observed in the Dirac bands of quasicrystalline bilayer graphene after optical pumping, leading to generation of transient voltage between the upper and lower layers. The amount of photoinduced carrier transport depends on the distance from the substrate. A comparison of the TARPES results of single-layer graphene between flat and stepped SiC substrates experimentally indicates that a source of the doping carriers likely originates from interface step states. The dynamic model is described based on the electronic structure, calculated using density functional theory.",
author = "Y. Zhao and T. Suzuki and T. Iimori and Kim, {H. W.} and Ahn, {J. R.} and M. Horio and Y. Sato and Y. Fukaya and T. Kanai and K. Okazaki and S. Shin and S. Tanaka and F. Komori and H. Fukidome and I. Matsuda",
note = "Funding Information: This work was supported by Grants-in-Aid for Specially Promoted Research (KAKENHI Grants No. JP18H03874, No. JP19H01818, No. JP19H04398, and No. JP21H05012) from Japan Society for the Promotion of Science and Grant No. NRF-2021M2E8A1048961 from the National Research Foundation (NRF) of Korea. We acknowledge Kaori Seino and Emi Minamitani for discussions on the theoretical calculations. The preliminary experiment was performed at facilities of the Synchrotron Radiation Research Organization, The University of Tokyo. Publisher Copyright: {\textcopyright} 2022 American Physical Society.",
year = "2022",
month = mar,
day = "15",
doi = "10.1103/PhysRevB.105.115304",
language = "English",
volume = "105",
journal = "Physical Review B",
issn = "2469-9950",
publisher = "American Physical Society",
number = "11",
}