Optical characterization of platinum-halide ladder compounds
Abstract
New varieties of quasi-one-dimensional halogen (X)-bridged transition-metal (M) complexes, (C_8_H_6_N_4_)[Pt(C_2_H_8_N_2_)X]_2_X(ClO_4_)_3_\cdotH_2_O (X=Br,Cl) and (C_10_H_8_N_2_)[Pt(C_4_H_13_N_3_)Br]_2_Br_4_\cdot2H_2_O, comprising two-leg ladders of mixed-valent platinum ions, are described in terms of a multiband extended Peierls-Hubbard Hamiltonian. The polarized optical conductivity spectra are theoretically reproduced and the ground-state valence distributions are reasonably determined. The latter variety, whose interchain valence arrangement is out of phase, is reminiscent of conventional MX single-chain compounds, while the former variety, whose interchain valence arrangement is in phase, reveals itself as a novel d-p-\pi-hybridized multiband ladder material.
Keywords
Cite
@article{arxiv.0711.1052,
title = {Optical characterization of platinum-halide ladder compounds},
author = {Shoji Yamamoto and Jun Ohara},
journal= {arXiv preprint arXiv:0711.1052},
year = {2020}
}
Comments
9 pages, 10 figures. to be published in Phys. Rev. B 76, November 15, No. 19