Die u:cris Detailansicht:
A systematic optical study of the Ba<sub>1-x</sub>K<sub>x</sub>BiO<sub>3</sub> system
- Autor(en)
- W. Markowitsch, H. Jodlbauer, V. Schlosser, W. Lang, K. Remschnig, P. Rogl
- Abstrakt
Reflection spectra of Ba1−xKxBiO3 over a
wide spectral range are reported. For x lower than the critical value
of ∼ 0.35 contributions of free carriers, interband transitions and
midgap absorption processes are observed. The plasma frequency is small
(< 0.1 eV) for all x below the insulator to metal transition.
Increasing x from 0 to ∼ 0.1 results in a transfer of oscillator
strength from the interband maximum to a midgap maximum. For x = 0.3 a
flat plasma edge is observed, which is deformed by remainders of both
the interband and midgap maxima.
- Organisation(en)
- Elektronische Materialeigenschaften, Institut für Physikalische Chemie
- Externe Organisation(en)
- Universität Wien
- Journal
- Physica C: Superconductivity and its Applications
- Band
- 185-189
- Seiten
- 993-994
- Anzahl der Seiten
- 2
- DOI
- https://doi.org/10.1016/0921-4534(91)91720-O
- Publikationsdatum
- 1991
- Peer-reviewed
- Ja
- ÖFOS 2012
- 103018 Materialphysik
- Link zum Portal
- https://ucrisportal.univie.ac.at/de/publications/0007d053-18f3-4ff4-aa98-19fdfe35559a