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Local mode behaviour in quasi-1D CDW systems

H. Fehske·G. Wellein·H. Büttner·A. R. Bishop·M. I. Salkola
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Abstract

We analyze numerically the ground-state and spectral properties of the three-quarter filled Peierls-Hubbard Hamiltonian. Various charge- and spin-ordered states are identified. In the strong-coupling regime, we find clear signatures of local lattice distortions accompanied by intrinsic multi-phonon localization. The results are discussed in relation to recent experiments on MX chain [-PtCl-] complexes. In particular we are able to reproduce the observed red shift of the overtone resonance Raman spectrum.

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H. Fehske, G. Wellein, H. Büttner, A. R. Bishop, M. I. Salkola. 1999-10-07. Local mode behaviour in quasi-1D CDW systems. https://doi.org/10.1016/s0921-4526(99)01066-2

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