Single-layer MoS${}_2$ on Au(111): band gap renormalization and substrate interaction

Abstract

The electronic structure of epitaxial single-layer MoS${}_2$ on Au(111) is investigated by angle-resolved photoemission spectroscopy, scanning tunnelling spectroscopy, and first principles calculations. While the band dispersion of the supported single-layer is close to a free-standing layer in the vicinity of the valence band maximum at $\bar{K}$ and the calculated electronic band gap on Au(111) is similar to that calculated for the free-standing layer, significant modifications to the band structure are observed at other points of the two-dimensional Brillouin zone: At $\bar{\Gamma }$, the valence band maximum has a significantly higher binding energy than in the free MoS${}_2$ layer and the expected spin-degeneracy of the uppermost valence band at the $\bar{M}$ point cannot be observed. These band structure changes are reproduced by the calculations and can be explained by the detailed interaction of the out-of-plane MoS${}_2$ orbitals with the substrate.

10 pages, 6 figures

References in corpus (8)

• Valley polarization in MoS2 monolayers by optical pumping
• Observation of giant bandgap renormalization and excitonic effects in a monolayer transition metal dichalcogenide semiconductor
• Surface States of the Topological Insulator Bi_{1-x}Sb_x
• Unfolding spinor wavefunctions and expectation values of general operators: Introducing the unfolding-density operator
• Controlling the Schottky barrier at MoS2|metal contacts by inserting a BN monolayer
• Electronic Structure of Epitaxial Single-Layer MoS${}_2$
• Observation of Ultrafast Free Carrier Dynamics in Single Layer MoS${}_2$
• Synthesis of Epitaxial Single-Layer MoS${}_2$ on Au(111)

Cited by in corpus (42)

• Ultrafast Band Structure Control of a Two-Dimensional Heterostructure
• The bright side of defects in MoS${}_2$ and WS${}_2$ and a generalizable chemical treatment protocol for defect passivation
• Ultrasensitive and highly accurate long-range surface plasmon resonance biosensors based on two-dimensional transition metal dichalcogenides
• Band gap measurements of monolayer h-BN and insights into carbon-related point defects
• Substrate screening effects on the quasiparticle band gap and defect charge transition levels in MoS${}_2$
• Direct Imaging and Electronic Structure Modulation of Moiré Superlattices at the 2D/3D Interface
• Moiré structure of MoS${}_2$ on Au(111): Local structural and electronic properties
• In-situ exfoliation method of large-area 2D materials
• Spin and Valley Control of Free Carriers in Single-Layer WS${}_2$
• Spatially Resolved Electronic Properties of Single-Layer WS${}_2$ on Transition Metal Oxides
• Contact-Induced Semiconductor-to-Metal Transition in Single-Layer WS${}_2$
• Spin structure of K valleys in single-layer WS${}_2$ on Au(111)
• Substrate impact on the thickness dependence of vibrational and optical properties of large area $Mo{S}_2$ produced by gold-assisted exfoliation
• Visualizing Orbital Content of Electronic Bands in Anisotropic 2D Semiconducting ReSe${}_2$
• Larger than 80% Valley Polarization of Free Carriers in Singly-Oriented Single Layer WS${}_2$ on Au(111)
• Tunneling-current-induced local excitonic luminescence in p-doped WSe${}_2$ monolayers
• Epitaxial single layer NbS${}_2$ on Au(111): synthesis, structure, and electronic properties
• Vibrational excitation mechanism in tunneling spectroscopy beyond the Franck-Condon model
• Phase Transition and Electronic Structure Investigation of MoS${}_2$-rGO Nanocomposite Decorated with AuNPs
• Accessing the spectral function of in operando devices by angle-resolved photoemission spectroscopy
• Coulomb-Engineered Heterojunctions and Dynamical Screening in Transition Metal Dichalcogenide Monolayers
• Substrate-induced suppression of charge density wave in monolayer 1H-TaS2 on Au(111)
• GW band structure of monolayer MoS2 using the SternheimerGW method and effect of dielectric environment
• Comprehensive tunneling spectroscopy of quasi-freestanding MoS${}_2$ on graphene on Ir(111)
• Spectral functions of CVD grown MoS${}_2$ monolayers after chemical transfer onto Au surface
• Impacts of dielectric screening on the luminescence of monolayer WSe${}_2$
• Monolayers of MoS${}_2$ on Ag(111) as decoupling layers for organic molecules: resolution of electronic and vibronic states of TCNQ
• Twist angle dependent electronic properties of exfoliated single layer MoS${}_2$ on Au(111)
• Decoupling Molybdenum Disulfide from its Substrate by Cesium Intercalation
• Electronic and magnetic properties of single chalcogen vacancies in MoS${}_2$/Au(111)
• Electron-phonon coupling in single-layer MoS2
• Dispersing and semi-flat bands in the wide band gap two-dimensional semiconductor bilayer silicon oxide
• Isolating the Nonlinear Optical Response of a MoS${}_2$ Monolayer under Extreme Screening of a Metal Substrate
• Quasi-free-standing single-layer WS2 achieved by intercalation
• Stability of edge magnetism against disorder in zigzag MoS${}_2$ nanoribbons
• Moiré induced electronic structure modifications in monolayer V${}_2$S${}_3$ on Au(111)
• Surface Sensitive Raman Response of Metal-Supported Monolayer MoS${}_2$
• Variations of vibronic states in densely-packed structures of molecules with intramolecular dipoles
• Size-dependent phase transitions in MoS2 nanoparticles controlled by a metal substrate
• Direct atomic layer deposition of ultrathin aluminium oxide on monolayer $Mo{S}_2$ exfoliated on gold: the role of the substrate
• Identifying the mechanism of single-domain single-layer MoS2 growth on Au(111)
• Ultrafast Charge Transfer Dynamics at the MoS${}_2$/Au Interface Observed via Optical Spectroscopy under Ambient Conditions