Nonlinear lattice relaxation of photoexcited diplatinum-halide chain compounds

被引：16

作者：

Ohara, J ^{[1
]}

Yamamoto, S ^{[1
]}

机构：

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

来源：

PHYSICAL REVIEW B | 2006年 / 73卷 / 04期

关键词：

D O I：

10.1103/PhysRevB.73.045122

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In order to reveal the relaxation mechanism of photogenerated charge-transfer excitations in quasi-one-dimensional halogen-bridged diplatinum complexes, we calculate the low-lying adiabatic potential energy surfaces of a one-dimensional extended Peierls-Hubbard model. High-energy excitations above the electron-hole continuum may relax into polarons, while excitons pumped within the optical gap are self-localized and then either decay by luminescence or divide into solitons. Neutral solitons, charged solitons, and polarons may be simultaneously photogenerated in a diplatinum-halide chain, which has never been observed in any conventional platinum-halide chain. Optical conductivity is also simulated along the decay paths for experimental verification.

引用

页数：7

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