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Photoinduced IR absorption in WO 3 : determination of the polaron binding energy |
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| Authors: | T Mertelj D Mihailovic |
| Institution: | (1) Jozef Stefan Institute, PO Box 3000, 1001 Ljubljana, Slovenia and University of Ljubljana, Faculty of Mathematics and Physics, Jadranska 19, 1000 Ljubljana, Slovenia, SI |
| Abstract: | Photoinduced IR absorption measurements are reported on WO3. A photoinduced midinfrared small polaron peak centered at 4800 cm-1 (0.59 eV) was observed. The data were analyzed in the framework of the photon-assisted small-polaron hopping theory and briefly compared to previously published infrared absorption measurements in WO3 and photoinduced IR absorption measurements in high T c cuprates. Received 20 April 2001 and Received in final form 13 July 2001 |
| Keywords: | PACS 71 38 -k Polarons and electron-phonon interactions – 78 30 Hv Other nonmetallic inorganics – 78 30 -j Infrared and Raman spectra |
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