Abstract
We include the treatment of quadrupolar fields beyond the Fröhlich interaction in the first-principles electron-phonon vertex in semiconductors. Such quadrupolar fields induce long-range interactions that have to be taken into account for accurate physical results. We apply our formalism to Si (nonpolar), GaAs, and GaP (polar) and demonstrate that electron mobilities show large errors if dynamical quadrupoles are not properly treated.
- Received 24 January 2020
- Revised 14 May 2020
- Accepted 20 August 2020
DOI:https://doi.org/10.1103/PhysRevLett.125.136601
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