Dynamical Valence Fluctuation at the Charge-Density-Wave Phase Boundary in Iodide-Bridged Pt Compound [Pt(chxn)2I]I2

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• 作者：Shinya Takaishi ; Daisuke Kawakami ; Masahiro Yamashita ; Mari Sasaki ; Takashi Kajiwara ; Hitoshi Miyasaka ; Ken-ichi Sugiura ; Yusuke Wakabayashi ; Hiroshi Sawa ; Hiroyuki Matsuzaki ; Hideo Kishida ; Hiroshi O
• 刊名：Journal of the American Chemical Society
• 出版年：2006
• 出版时间：May 17, 2006
• 年：2006
• 卷：128
• 期：19
• 页码：6420 - 6425
• 全文大小：360K
• 年卷期：v.128,no.19(May 17, 2006)
• ISSN：1520-5126

文摘

We synthesized a novel iodo-bridged linear chain platinum compound, having the quasi-two-dimensional charge-density-wave (CDW) ground state and the smallest band gap. In this compound, wediscovered an anomalous valence state in the boundary region at which the CDW phase alternates in thecrystal by means of ESR, X-ray diffuse scattering, STM, and electrical resistivity. This anomalous statecan be explained by the fast fluctuation between Pt^IV-I···Pt^II and Pt^II···I-Pt^IV in the double well potential.This is the first observation of the dynamical fluctuation of the CDW phase among the quasi one-dimensionalhalogen-bridged complexes.