Faraday Rotation of Rare-Earth Ions. I. Theory
- 20 January 1964
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 133 (2A), A511-A515
- https://doi.org/10.1103/physrev.133.a511
Abstract
A general expression for the complex Faraday rotation is obtained by generalizing the Kramers-Heisenberg dispersion formula. It shows that the pure rotation is proportional to the sum of circular dichroism in in all resonance transitions weighted by the appropriate resonance-dispersion factors. The cases of free ions and rare-earth ions in solids are discussed. It is shown how and , having the same electronic structure, may possess very different rotatory powers in a given frequency range through the difference in their optical spectra. The formula for the anomalous rotatory dispersion about sharp lines is also given.
Keywords
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