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First-principles Fröhlich electron-phonon coupling and polarons in oxides and polar semiconductors

Abstract:

The Fröhlich coupling describes the interaction between electrons and infrared-active vibrations at long wavelength in polar semiconductors and insulators, and may result in the formation of polaronic quasiparticles. Polarons are electrons dressed by a phonon cloud, which can strongly affect the electronic properties of the crystal. Despite their ubiquitous role in a broad range of technologies, first-principles investigations of the electron-phonon interaction in polar materials are scarc...

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University of Oxford
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Grant:
RL-2012-001
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Type of award:
DPhil
Level of award:
Doctoral
Awarding institution:
University of Oxford

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