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Carrier dynamics in (0001) thin films and single crystals probed by femtosecond transient absorption and reflectivity
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10.1063/1.2177426
/content/aip/journal/jap/99/5/10.1063/1.2177426
http://aip.metastore.ingenta.com/content/aip/journal/jap/99/5/10.1063/1.2177426
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Transmission as a function of wavelength for a thin film grown on a buffer layer on a sapphire substrate (solid line) and a thin film on a sapphire substrate (dotted line).

Image of FIG. 2.
FIG. 2.

Femtosecond transient reflectivity (dotted lines) and absorption (solid lines) following excitation at from a thick film at probe wavelengths of and .

Image of FIG. 3.
FIG. 3.

Femtosecond transient reflectivity (dotted lines) and absorption (solid lines) following excitation at from a thick film at probe wavelengths of and .

Image of FIG. 4.
FIG. 4.

Longer time femtosecond transient transmission data following excitation at for a thick film at probe wavelengths of 460, 500, and .

Image of FIG. 5.
FIG. 5.

Maximum change in reflectivity (squares), transmission (circles), and absorption (diamonds) for a thick film at different probe energies above and below the band gap at . The largest changes in both reflectivity and absorption occur near the band gap energy as expected for band filling and band gap shrinkage.

Image of FIG. 6.
FIG. 6.

Femtosecond transient reflectivity following excitation from a single crystal of hematite using probe wavelengths of 500, 560, 620, and .

Image of FIG. 7.
FIG. 7.

Longer time femtosecond transient reflectivity following excitation from a single crystal of hematite using probe wavelengths of 500, 620, and . The oscillations in the reflectivity have a frequency of and appear only at probe energies at or below the band gap.

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/content/aip/journal/jap/99/5/10.1063/1.2177426
2006-03-10
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Carrier dynamics in α‐Fe2O3 (0001) thin films and single crystals probed by femtosecond transient absorption and reflectivity
http://aip.metastore.ingenta.com/content/aip/journal/jap/99/5/10.1063/1.2177426
10.1063/1.2177426
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