First-principles study of the mobility of SrTiO${}_3$

Abstract

We investigate the electronic and vibrational spectra of SrTiO${}_3$, as well as the coupling between them, using first-principles calculations. We compute electron-phonon scattering rates for the three lowest-energy conduction bands and use Boltzmann transport theory to calculate the room-temperature mobility of SrTiO${}_3$. The results agree with experiment and highlight the strong impact of longitudinal optical phonon scattering. Our analysis provides important insights into the key factors that determine room temperature mobility, such as the number of conduction bands and the nature and frequencies of longitudinal phonons. Such insights provide routes to engineering materials with enhanced mobilities.

5 pages, 5 figures

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• BoltzTraP. A code for calculating band-structure dependent quantities
• High Mobility in a Stable Transparent Perovskite Oxide
• Electron-phonon interaction and charge carrier mass enhancement in SrTiO3
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Cited by in corpus (6)

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• Conductivity and thermoelectric coefficients of doped SrTiO${}_3$ at high temperatures
• Octahedral Rotation Induced, Antiferroelectric-like Double Hysteresis in Strained Perovskites
• Leveraging high fluence and low pressure for pulsed laser deposition of high-mobility $\gamma$-Al${}_2$O${}_3$/SrTiO${}_3$ heterostructure growth