Simulation of ac conductivity of monolayer MoS2 at terahertz frequencies

2022 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD)（2022）

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Abstract

We present a multiphysics numerical tool for calculating the terahertz (THz) conductivity of transition-metal dichalcogenides (TMDs). The tool combines the ensemble Monte Carlo (EMC) technique for carrier transport with a three-dimensional finite-difference-time-domain (FDTD) solver for electromagnetic fields. We use the coupled EMC–FDTD technique to calculate the frequency-dependent conductivity in the terahertz range for monolayer MoS 2 , both for suspended layers and for layers supported on the commonly used silicon-dioxide substrate.

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Key words

ac conductivity,monolayer MoS2,terahertz frequencies,multiphysics numerical tool,transition-metal dichalcogenides,ensemble Monte Carlo technique,carrier transport,three-dimensional finite-difference-time-domain solver,electromagnetic fields,coupled EMC-FDTD technique,frequency-dependent conductivity,terahertz range

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