Wei, X. ; Pal, A. J. ; Chen, L. ; Ruani, G. ; Taliani, C. ; Vardeny, Z. V. ; Zamboni, R. (1992) CDW suppression and photoinduced gap states in BaBiO3 Solid State Communications, 81 (5). pp. 419-423. ISSN 0038-1098
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Official URL: http://www.sciencedirect.com/science/article/pii/0...
Related URL: http://dx.doi.org/10.1016/0038-1098(92)90770-A
Abstract
We have studied the electronic and vibrational photoexcitations in high quality polycrystalline BaBiO3 by the photomodulation spectroscopy technique in a broad spectral range (50-20 000 cm-1) and time interval (10-6 s to 100 s). We have identified two distinct photogenerated gap states with below gap electronic transitions and associated bleaching of i.r.-active vibrations. We interpret these spectral features as evidence of photogenerated polarons and bipolarons and explain their distinct generation processes and recombination kinetics. The photobleaching of i.r.-active vibrations is explained as due to suppression of the 3-D charge-density-waves.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 65747 |
| Deposited On: | 18 Oct 2011 08:53 |
| Last Modified: | 18 Oct 2011 08:53 |
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