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- W4375956870 abstract "The semiconductor BAs has drawn significant interest due to experimental reports of simultaneous high thermal conductivity and ambipolar charge mobility. The textit{ab~initio} prediction of high electron and hole mobility assumed the dominance of charge carrier scattering by one phonon. Recently, higher-order electron-phonon scattering processes in polar and non-polar semiconductors have been reported to have a non-negligible impact on charge transport properties, suggesting they may play a role in BAs as well. Here, we report an textit{ab~initio} study of two-phonon electron and hole scattering processes in BAs. We find that inclusion of these higher-order processes reduces the computed room temperature electron and hole mobility in BAs by around 40% from the one-phonon value, resulting in an underestimate of experimental values by a similar percentage. We suggest an experimental approach to test these predictions using luminescence spectroscopy that is applicable to the defective samples which are presently available." @default.
- W4375956870 created "2023-05-10" @default.
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- W4375956870 date "2023-05-04" @default.
- W4375956870 modified "2023-09-25" @default.
- W4375956870 title "Charge transport in BAs and the role of two-phonon scattering" @default.
- W4375956870 doi "https://doi.org/10.48550/arxiv.2305.03159" @default.
- W4375956870 hasPublicationYear "2023" @default.
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