Optical and Raman Signatures of Polarons in Mixed-Valent Linear Chain Metal Complexes with Halogen Bridges
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概要
- 論文の詳細を見る
The vibrational (Raman) and optical properties associated with the ground state and polaronic defects are compared and contrasted for the charge-density-wave PtX materials belonging to two different regimes: the highly valence localized compound PtCl and the more valence delocalized compound PtBr. The model for PtCl explicitly includes nearest-neighbor Coulomb attraction and metal ion-ion electrostatic repulsion: with increasing valence delocalization this reduces to the linear Peierls-Hubbard model used for PtBr. The results agree well with the available experimental data for PtCl and PtBr. Buckling of Cl atoms out of the chain axis is found to be important in order to obtain the observed Raman frequencies for electron polarons and bipolarons in PtCl.
- 理論物理学刊行会の論文
- 1993-10-20
著者
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Bishop A
Los Alamos National Lab. New Mexico Usa
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BISHOP A.
Theoretical Division, Los Alamos National Laboratory
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BATISTIC I.
Institute of Physics of the University
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HUANG X.
Theoretical Division, Los Alamos National Laboratory
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SAXENA A.
Theoretical Division, Los Alamos National Laboratory
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Bishop A.
Theoretical Division Los Alamos National Laboratory
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SAXENA A.
Nuclear Physics Division, Bhabha Atomic Research Center
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Saxena A.
Theoretical Division Los Alamos National Laboratory
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Bishop A.R.
Theoretical Division, Los Alamos National Laboratory
関連論文
- Optical and Raman Signatures of Polarons in Mixed-Valent Linear Chain Metal Complexes with Halogen Bridges
- Vibronic, Optical, and Magnetic Excitations around Solitons in a One-Dimensional Two-Band Peierls-Hubbard Model
- Dynamical Effects in the Region of Heavy and Super-Heavy Nuclei