Research paperExperimental GrowthExperimental CharacterizationComputational DFTPb-intercalated epitaxial graphene on SiC: Full insight into band structure and orbital character of interlayer Pb, and charge transfer into grapheneBharti Matta, Philipp Rosenzweig, Kathrin Küster, Craig Polley et al.2025·10.1103/PhysRevB.111.155435·arXiv:2501.08172AbstractIntercalation is a robust approach for modulating the properties of epitaxial graphene on SiC and stabilizing two-dimensional intercalant layers at the graphene/SiC interface. This work presents synchrotron-based angle-resolved photoelectron spectroscopy measurements of intercalated Pb under a single layer of epitaxial graphene, showing metallic, nearly free-electron-like interlayer Pb bands with (1×1) registry to SiC and polarization-dependent orbital character. Density functional theory calculations for a (1×1) Pb monolayer on SiC qualitatively agree with experiment. Temperature-dependent ARPES indicates that the nearly charge-neutral graphene layer involves charge transfer from both interlayer Pb and the SiC substrate.Read more
Pb-intercalated epitaxial graphene on 6H-SiC(0001), yielding Pb-QFMLG with a graphene monolayer above an intercalated Pb layer on SiC.5 preparations5 characterizations7 properties4 figuresExperimentalCStudied MaterialPbStudied MaterialSiCSubstrate / DielectricExpand
Research paperExperimental GrowthExperimental CharacterizationComputational DFTPb-intercalated epitaxial graphene on SiC: Full insight into band structure and orbital character of interlayer Pb, and charge transfer into grapheneBharti Matta, Philipp Rosenzweig, Kathrin Küster, Craig Polley et al.2025·10.1103/PhysRevB.111.155435·arXiv:2501.08172AbstractIntercalation is a robust approach for modulating the properties of epitaxial graphene on SiC and stabilizing two-dimensional intercalant layers at the graphene/SiC interface. This work presents synchrotron-based angle-resolved photoelectron spectroscopy measurements of intercalated Pb under a single layer of epitaxial graphene, showing metallic, nearly free-electron-like interlayer Pb bands with (1×1) registry to SiC and polarization-dependent orbital character. Density functional theory calculations for a (1×1) Pb monolayer on SiC qualitatively agree with experiment. Temperature-dependent ARPES indicates that the nearly charge-neutral graphene layer involves charge transfer from both interlayer Pb and the SiC substrate.Read more
Pb-intercalated epitaxial graphene on 6H-SiC(0001), yielding Pb-QFMLG with a graphene monolayer above an intercalated Pb layer on SiC.5 preparations5 characterizations7 properties4 figuresExperimentalCStudied MaterialPbStudied MaterialSiCSubstrate / DielectricExpand
Research paperExperimental GrowthExperimental CharacterizationComputational DFTPb-intercalated epitaxial graphene on SiC: Full insight into band structure and orbital character of interlayer Pb, and charge transfer into grapheneBharti Matta, Philipp Rosenzweig, Kathrin Küster, Craig Polley et al.2025·10.1103/PhysRevB.111.155435·arXiv:2501.08172AbstractIntercalation is a robust approach for modulating the properties of epitaxial graphene on SiC and stabilizing two-dimensional intercalant layers at the graphene/SiC interface. This work presents synchrotron-based angle-resolved photoelectron spectroscopy measurements of intercalated Pb under a single layer of epitaxial graphene, showing metallic, nearly free-electron-like interlayer Pb bands with (1×1) registry to SiC and polarization-dependent orbital character. Density functional theory calculations for a (1×1) Pb monolayer on SiC qualitatively agree with experiment. Temperature-dependent ARPES indicates that the nearly charge-neutral graphene layer involves charge transfer from both interlayer Pb and the SiC substrate.Read more
Pb-intercalated epitaxial graphene on 6H-SiC(0001), yielding Pb-QFMLG with a graphene monolayer above an intercalated Pb layer on SiC.5 preparations5 characterizations7 properties4 figuresExperimentalCStudied MaterialPbStudied MaterialSiCSubstrate / DielectricExpand
Research paperExperimental GrowthExperimental CharacterizationComputational DFTPb-intercalated epitaxial graphene on SiC: Full insight into band structure and orbital character of interlayer Pb, and charge transfer into grapheneBharti Matta, Philipp Rosenzweig, Kathrin Küster, Craig Polley et al.2025·10.1103/PhysRevB.111.155435·arXiv:2501.08172AbstractIntercalation is a robust approach for modulating the properties of epitaxial graphene on SiC and stabilizing two-dimensional intercalant layers at the graphene/SiC interface. This work presents synchrotron-based angle-resolved photoelectron spectroscopy measurements of intercalated Pb under a single layer of epitaxial graphene, showing metallic, nearly free-electron-like interlayer Pb bands with (1×1) registry to SiC and polarization-dependent orbital character. Density functional theory calculations for a (1×1) Pb monolayer on SiC qualitatively agree with experiment. Temperature-dependent ARPES indicates that the nearly charge-neutral graphene layer involves charge transfer from both interlayer Pb and the SiC substrate.Read more
Pb-intercalated epitaxial graphene on 6H-SiC(0001), yielding Pb-QFMLG with a graphene monolayer above an intercalated Pb layer on SiC.5 preparations5 characterizations7 properties4 figuresExperimentalCStudied MaterialPbStudied MaterialSiCSubstrate / DielectricExpand