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Dynamics of ballistic photocurrents driven by Coulomb scattering in a two-dimensional material

Published Web Location

https://doi.org/10.1103/nvfh-nybb
Creative Commons 'BY' version 4.0 license
Abstract

First-principles real-time time-dependent density-functional theory (rt-TDDFT) calculations reveal the existence of ballistic photocurrents generated by Coulomb scattering, which has not previously been considered as a mechanism for the bulk photovoltaic effect. With monolayer GeS as an example, it is predicted that ballistic currents can be comparable to shift currents under experimentally accessible conditions.

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