Nonlinear lattice relaxation of photoexcited diplatinum-halide chain compounds
arXiv:cond-mat/0512636 · doi:10.1103/PhysRevB.73.045122
Abstract
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.
arXiv comment8 pages, 8 figures
References in corpus (11)
- Characterization of halogen-bridged binuclear metal complexes as hybridized two-band materials
- Spin-Peierls ground states and frustration in a multi-band Peierls-Hubbard model
- Quantum and Thermal Phase Transitions of Halogen-Bridged Binuclear Transition-Metal Complexes
- Pressure-induced phase transitions of halogen-bridged binuclear metal complexes R_4[Pt_2(P_2O_5H_2)_4X]nH_2O
- Broken-Symmetry Ground States of Halogen-Bridged Binuclear Metal Complexes
- Novel Density-Wave States of Two-Band Peierls-Hubbard Chains
- Competing Ground States of the New Class of Halogen-Bridged Metal Complexes
- Soliton excitations in halogen-bridged mixed-valence binuclear metal complexes
- Soliton-induced optical absorption of halogen-bridged mixed-valence binuclear metal complexes
- Photoinduced Absorption Spectra of Halogen-Bridged Binuclear Metal Complexes: Possible Contrast between R_4_[Pt_2_(P_2_O_5_H_2_)_4_X]nH_2_O and Pt_2_(CH_3_CS_2_)_4_I
- Photoinduced infrared absorption of quasi-one-dimensional halogen-bridged binuclear transition-metal complexes
Cited by in corpus (7)
- Optical characterization of platinum-halide ladder compounds
- Excitation Spectrum of One-dimensional Extended Ionic Hubbard Model
- Competing ground states of metal-halide ladders
- Optical characterization of ground states of polyacene
- Photoinduced Structural Phase Transitions in Polyacene
- Photoproduction of spin and charge carriers in halogen-bridged binuclear platinum chain complexes
- Polarized Raman Response of Two-Dimensional Quasiperiodic Antiferromagnets: Configuration-Interaction versus Green's Function Approaches