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Electronic structure and polaronic excitation in FeVO4
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10.1063/1.3646402
/content/aip/journal/apl/99/14/10.1063/1.3646402
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/14/10.1063/1.3646402
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Figures

Image of FIG. 1.
FIG. 1.

(Color online) (a) θ–2θ x-ray diffraction pattern of FeVO4, (b) XPS elemental spectrum of Fe for a FeVO4 ceramic, and (c) XPS elemental spectrum of V and O for a FeVO4 ceramic.

Image of FIG. 2.
FIG. 2.

(Color online) (a) (α * E)2 versus energy for band gap determination in FeVO4. The dashed line is a guide to the eye, and the open box indicates the ∼2.7 eV bandgap. Inset: absorption as a function of energy. (b) Valence band XPS spectrum for FeVO4. The dashed line is a guide to the eye. Inset: schematic energy diagram. (c) Optical conductivity spectrum of FeVO4. The blue dashed line shows our best fit to a large polaron model, whereas the dotted green line shows our best fit to a small polaron model. The sharp features at lower frequency are the normal modes of vibration. The peak marked with a “*” corresponds to a signature of the Si substrate.

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/content/aip/journal/apl/99/14/10.1063/1.3646402
2011-10-04
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Electronic structure and polaronic excitation in FeVO4
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/14/10.1063/1.3646402
10.1063/1.3646402
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