Photoinduced infrared absorption of quasi-one-dimensional halogen-bridged binuclear transition-metal complexes

被引：6

作者：

Ohara, J ^{[1
]}

Yamamoto, S ^{[1
]}

机构：

[1] Hokkaido Univ, Div Phys, Sapporo, Hokkaido 0600810, Japan

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2005年 / 66卷 / 8-9期

关键词：

inorganic compounds; infrared spectroscopy; optical properties;

D O I：

10.1016/j.jpcs.2005.05.059

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We investigate the optical conductivity of photogencrated solitons in quasi-one-dimensional halogen-bridged binuclear transition-metal (MMX) complexes with particular emphasis on a comparison among the three distinct groups: A(4)[Pt-2(P2O5H2)(4)X]center dot nH(2)O (X = Cl, Br, i; A = Na, K, NH4,...), Pt-2(RCS2)(4)I (R=CnH2n+1,) and Ni-2(CH3CS2)(4)I which exhibit a mixed-valent ground state with the X sublattice dimerized, that with the M-2 sublattice dimerized and a Mott-Hubbard magnetic ground state, respectively. Soliton-induced absorption spectra for A(4)[Pt-2(P2O5H2)(4)X]center dot nH(2)O should split into two bands, while that for Pt-2(RCS2)(4)I and Ni-2(CH3CS2)(4)I should consist of a single band. The excitonic effect is significant in Ni-2(CH3CS2)(4)I. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：1571 / 1574

页数：4

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