Electric field screening in atomically thin layers of MoS2: the role of interlayer coupling

Abstract

The aim of this work is to study the electrostatic screening by single and few-layer MoS2 sheets by means of electrostatic force microscopy in combination with a non-linear Thomas-Fermi Theory to interpret the experimental results. We find that a continuum model of decoupled layers, which satisfactorily reproduces the electrostatic screening for graphene and graphite, cannot account for the experimental observations. A three-dimensional model with an interlayer hopping parameter can on the other hand successfully account for the observed electric field screening by MoS2 nanolayers, pointing out the important role of the interlayer coupling in the screening of MoS2.

13 pages, 3 figures, include supporting information

References in corpus (14)

• Electric Field Effect in Atomically Thin Carbon Films
• Two Dimensional Atomic Crystals
• Boron nitride substrates for high-quality graphene electronics
• Anomalous Lattice Vibrations of Single and Few-Layer MoS2
• Integrated Circuits Based on Bilayer MoS2 Transistors
• Elastic properties of freely suspended MoS2 nanosheets
• Laser-thinning of MoS2: on demand generation of a single-layer semiconductor
• Optical identification of atomically thin dichalcogenide crystals
• Surface State Transport and Ambipolar Electric Field Effect in Bi2Se3 Nanodevices
• Surface Potentials and Layer Charge Distributions in Few-Layer Graphene Films
• Mechanical properties of freely suspended semiconducting graphene-like layers based on MoS2
• Electric field screening in atomically thin layers of MoS2: the role of interlayer coupling
• Mechanical properties of freely suspended atomically thin dielectric layers of mica
• Calibration of piezoelectric positioning actuators using a reference voltage-to-displacement transducer based on quartz tuning forks

Cited by in corpus (6)

• Electronic properties of single-layer and multilayer transition metal dichalcogenides $M{X}_2$ ($M=$ Mo, W and $X=$ S, Se)
• TiS3 transistors with tailored morphology and electrical properties
• Electric field screening in atomically thin layers of MoS2: the role of interlayer coupling
• Dielectric Screening in Atomically Thin Boron Nitride Nanosheets
• Electric Contributions to Magnetic Force Microscopy Response from Graphene and MoS2 Nanosheets
• Electric Field Effects on Graphene Materials