| Autor: |
Assmann, S., Schweizer, S., Overhof, H., Spaeth, J.M. |
| Zdroj: |
Radiation Effects and Defects in Solids; November 2001, Vol. 155 Issue: 1-4 p27-30, 4p |
| Abstrakt: |
AbstractWith magnetic circular dichroism of the optical absorption (MCDA) and MCDA-detected electron paramagnetic resonance (MCDA-EPR) it is possible to unambiguously identify the higher absorption bands (L1—L3) of F centres. In CsBr, similarly as found earlier for example KCI, there are several transitions beyond the K band to states resonant in the conduction band up to about 1.5 eV. It is observed that the peak-to-peak separation of the MCDA increases with increasing transition energy indicating the dominant role played by lifetime effects additionally to the spin-orbit coupling in the resonance states. In RbBr similar bands and features have been observed. However, the phase of the derivative-like MCDA-L band structures is opposite to that in CsBr. A preliminary theoretical approach to explain the resonance states is presented. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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