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Competing ground states of metal-halide ladders

Kei-ichi Funase·Shoji Yamamoto
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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.

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Kei-ichi Funase, Shoji Yamamoto. 2006-05-06. Competing ground states of metal-halide ladders. https://doi.org/10.1143/jpsj.75.044717

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