Electronic Band Dispersion of Graphene Nanoribbons via Fourier-Transformed Scanning Tunneling Spectroscopy

Abstract

Atomically precise armchair graphene nanoribbons of width $N=7$ (7-AGNRs) are investigated by scanning tunneling spectroscopy (STS) on Au(111). The analysis of energy-dependent standing wave patterns of finite length ribbons allows, by Fourier transformation, the direct extraction of the dispersion relation of frontier electronic states. Aided by density functional theory calculations, we assign the states to the valence band, the conduction band and the next empty band of 7-AGNRs, determine effective masses of $0.42\pm 0.08m_e$, $0.40\pm 0.18m_e$ and $0.20\pm 0.03m_e$, respectively, and a band gap of $2.37\pm 0.06$ eV.

arXiv comment20 pages, 7 figures

References in corpus (6)

• Quantum ESPRESSO: a modular and open-source software project for quantum simulations of materials
• Spin currents in rough graphene nanoribbons: Universal fluctuations and spin injection
• Electronic properties of graphene: a perspective from scanning tunneling microscopy and magneto-transport
• Defect-induced multicomponent electron scattering in single-walled carbon nanotubes
• Electron Scattering in Intrananotube Quantum Dots
• Spectral footprints of impurity scattering in graphene nanoribbons

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