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• W2912272355 abstract "Electron-phonon coupling is at the core of various regimes of material-based science and technology. Taking $3C$-silicon carbide ($3C$-SiC) as an example, despite its very wide application in high-temperature and high-power devices, the transport properties of $3C$-SiC are not yet fully understood at the microscopic level because of inadequate knowledge in electron-phonon coupling. In this paper, with electron-phonon coupling matrix elements calculated from first principles, the phonon limited carrier mobility of $3C$-SiC is quantified by solving the Boltzmann transport equation. The calculated mobilities for both holes and electrons are in reasonable agreement with the experimental data. Unlike other polar semiconductors such as GaAs, where the polar-longitudinal-optical (LO)-phonon interactions are the dominant scattering mechanism, the mobilities of electrons and holes are dominated by the intravalley longitudinal acoustic phonon scattering at 300 K due to the low occupation number of high-frequency polar LO phonons in $3C$-SiC. The dominant scattering mechanism in $3C$-SiC varies with temperature. At high temperature (800 K), LO phonons govern the scattering instead. The maximum mean-free paths of electrons and holes at room temperature are found to be 40 nm and 15 nm, respectively." @default.
• W2912272355 created "2019-02-21" @default.
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• W2912272355 date "2019-01-28" @default.
• W2912272355 modified "2023-10-14" @default.
• W2912272355 title "Phonon-limited carrier mobility and temperature-dependent scattering mechanism of <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mrow><mml:mn>3</mml:mn><mml:mi>C</mml:mi></mml:mrow></mml:math> -SiC from first principles" @default.
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• W2912272355 doi "https://doi.org/10.1103/physrevb.99.045201" @default.
• W2912272355 hasPublicationYear "2019" @default.
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