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29 March 2024
 
  » arxiv » cond-mat/0307036

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A possible demonstration of cooperative dynamical Jahn-Teller effect in Raman scattering spectrum of rhombohedral $LaMnO_3$
S.E. Popov ; A.E. Nikiforov ;
Date 2 Jul 2003
Subject Strongly Correlated Electrons | cond-mat.str-el
AbstractThe Raman scattering (RS) spectra of rhombohedral $LaMnO_3$ is considered. It is shown that broad high intensity RS line at 640 $cm^{-1}$ could be explained in the framework of cooperative dynamical Jahn-Teller effect. This hypothesis is illustrated through the lattice dynamics calculations explicitly allowing for the electron-phonon term both in crystal energy and in dynamical matrix. The averaging scheme for the one mode cooperative dynamical effect is proposed
Source arXiv, cond-mat/0307036
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