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Strong polaronic ef...
Strong polaronic effects on rutile TiO2 electronic band edges
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- Persson, Clas (författare)
- KTH,Tillämpad materialfysik
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da Silva, A. F. (författare)
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(creator_code:org_t)
- AIP Publishing, 2005
- 2005
- Engelska.
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Ingår i: Applied Physics Letters. - : AIP Publishing. - 0003-6951 .- 1077-3118. ; 86:23
- Relaterad länk:
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https://urn.kb.se/re...
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visa fler...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Thin TiO2 films are prepared by dc magnetron sputtering as well as by the sol-gel technique, and the optical band edge absorption alpha(omega) is obtained from transmission spectroscopy. The electronic structure and optical properties are studied employing a first-principle linearized augmented plane-wave method within the local density approximation (LDA), improved by an on-site Coulomb self-interaction potential (LDA+U-SIC). We show that the correction potential, the polaronic screening, and the spin-orbit interaction are crucial for determining the TiO2 effective electron and hole masses. The dielectric function and the high-frequency constant epsilon(0 <
Nyckelord
- dielectric-constant
- optical-properties
- films
- wurtzite
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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