Light scattering on phonons in quasi-one-dimensional antiferromagnet CsFeCl3⋅2H2O induced by magnetic ordering

The appearance of new phonon lines in the Raman spectrum of the quasi-one-dimensional antiferromagnet CsFeCl3⋅2H2O as a consequence of magnetic ordering with a change of the unit cell volume was detected experimentally. An analysis of the possible mechanisms that might lead to the observed spectral...

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Published in:Low temperature physics (Woodbury, N.Y.) N.Y.), 2002-07, Vol.28 (7), p.516-522
Main Authors: Kurnosov, V. S., Peschanskii, A. V., Fomin, V. I., Yeremenko, A. V., Pashkevich, Yu. G.
Format: Article
Language:English
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Summary:The appearance of new phonon lines in the Raman spectrum of the quasi-one-dimensional antiferromagnet CsFeCl3⋅2H2O as a consequence of magnetic ordering with a change of the unit cell volume was detected experimentally. An analysis of the possible mechanisms that might lead to the observed spectral features is done. A new mechanism of inducing Raman scattering on phonons from the boundary of the paramagnetic Brillouin zone is hypothesized.
ISSN:1063-777X
1090-6517
DOI:10.1063/1.1496660