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Apr 3, 2020

ACS Spring 2020 National Meeting & Expo

Magnetic field driven carrier dynamics in graphene

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Abstract

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Abstract

It has been realized that layered materials have potential for advanced technological applications. Electrons and holes in 2D materials are influenced by momentum dispersion since these materials are periodic along its growth directions. However, computational modeling of dynamics of charge carriers in 2D materials under applied magnetic field induced by momentum dispersion remain challenging. Here, we perform non-adiabatic dynamic calculations on atomic models of graphene under applied magnetic field, . Electron-hole dynamics, nonradiative relaxation/recombination is calculated using computational method[1] for studying photoexcited lifetimes of hot charge carriers influenced by momentum dispersion in 1D SiNWs[2]. The electron-phonon nonradiative interaction is expected to dissipate energy of Landau states which are perturbed and experienced nonequilibrium dynamics. This nonequilibrium dynamics is studied with wavepacket based algorithm. Our work is expected to establish a fundamental understanding of magnetic field effect on graphene influenced by momentum sampling along the growth directions, which is critical for the quantum computing and optoelectronic applications.

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© Copyright 2019 Morressier GmbH.
All rights reserved.