Competing ground states of metal-halide ladders

Abstract

Based on a symmetry argument, we investigate the ground-state properties of newly synthesized metal-halide ladder compounds (C_8_H_6_N_4_)[Pt(C_2_H_8_N_2_)X]_2_(ClO_4_)_4_ 2H_2_O (X=Cl, Br, I). Employing a fully dressed two-band Peierls-Hubbard model, we systematically reveal possible charge- or spin-ordered states. Numerical phase diagrams demonstrate a variety of competing Peierls and Mott insulators with particular emphasis on the transition between two types of mixed-valent state of Pt^II^ and Pt^IV^ driven by varying interchain hopping integrals and Coulomb interactions.

arXiv comment6 pages with 4 figures embedded

References in corpus (14)

• Antiferromagnetic Phases of One-Dimensional Quarter-Filled Organic Conductors
• Coexistence of charge density wave and spin-Peierls orders in quarter-filled quasi-one dimensional correlated electron systems
• Characterization of halogen-bridged binuclear metal complexes as hybridized two-band materials
• Electron-phonon and spin-phonon coupling in NaV${}_2$O${}_5$: charge fluctuations effect
• Spin-Peierls ground states and frustration in a multi-band Peierls-Hubbard model
• Differences Between Hole and Electron Doping of a Two-Leg CuO Ladder
• On the Spin Gap Phase in lambda-(BETS)_2GaX_zY_{4-z}
• 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
• Nonlinear lattice relaxation of photoexcited diplatinum-halide chain compounds
• 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
• Photoinduced infrared absorption of quasi-one-dimensional halogen-bridged binuclear transition-metal complexes

Cited by in corpus (5)

• Optical characterization of platinum-halide ladder compounds
• Competing Ground States of a Peierls-Hubbard Nanotube
• Photoinduced Structural Phase Transitions in Polyacene
• Ground-state properties of a Peierls-Hubbard triangular prism
• Photoproduction of spin and charge carriers in halogen-bridged binuclear platinum chain complexes