Self-trapped Exciton and Franck-Condon Spectra Predicted in LaMnO$_3$

Details Self-trapped Exciton and Franck-Condon Spectra Predicted in LaMnO$_3$ Self-trapped Exciton and Franck-Condon Spectra Predicted in LaMnO$_3$

1999-10-14

arxiv.org/abs/cond-mat/9910216v1

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages with two embedded postscript figures

Scientific paper

10.1103/PhysRevLett.83.4828

Because the ground state has cooperative Jahn-Teller order, electronic excitations in LaMnO$_3$ are predicted to self-trap by local rearrangement of the lattice. The optical spectrum should show a Franck-Condon series, that is, a Gaussian envelope of vibrational sidebands. Existing data are reinterpreted in this way. The Raman spectrum is predicted to have strong multiphonon features.

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