Quantum and Thermal Phase Transitions of Halogen-Bridged Binuclear Transition-Metal Complexes
arXiv:cond-mat/0104014 · doi:10.1143/JPSJ.70.1198
Abstract
Aiming to settle the controversial observations for halogen-bridged binuclear transition-metal (MMX) complexes, finite-temperature Hartree-Fock calculations are performed for a relevant two-band Peierls-Hubbard model. Thermal, as well as quantum, phase transitions are investigated with particular emphasis on the competition between electron itinerancy, electron-phonon interaction and electron-electron correlation. Recently observed distinct thermal behaviors of two typical MMX compounds Pt_2(CH_3CS_2)_4I and (NH_4)_4[Pt_2(P_2O_5H_2)_4I]2H_2O are supported and further tuning of their electronic states is predicted.
5 pages, 3 figures embedded, to be published in J. Phys. Soc. Jpn. Vol.70, No.5 (2001)
References in corpus (1)
Cited by in corpus (10)
- Optical characterization of platinum-halide ladder compounds
- Nonlinear lattice relaxation of photoexcited diplatinum-halide chain compounds
- Competing Ground States of a Peierls-Hubbard Nanotube
- Competing ground states of metal-halide ladders
- Soliton excitations in halogen-bridged mixed-valence binuclear metal complexes
- Soliton-induced optical absorption of halogen-bridged mixed-valence binuclear metal complexes
- Ground-state properties of a Peierls-Hubbard triangular prism
- Photoproduction of spin and charge carriers in halogen-bridged binuclear platinum chain 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