title: Novel optical and magnetic bistability and photoinduced transition in a one-dimensional halogen-bridged binuclear pt complex.
abstract: In iodine-bridged binuclear Pt compounds, R(4)[Pt(2)(pop)(4)I]nH(2)O and R(')(2)[Pt(2)(pop)(4)I]nH(2)O (pop=P(2)O5H2-2), electronic structures on the PtPtI chains have been controlled between a diamagnetic charge-density-wave (CDW) state and a paramagnetic charge-polarization (CP) state by modification of the counterions (R, R') located between chains. In the R=(C2H5)2NH+2 compound, a pressure-induced CP to CDW transition with a drastic color change is identified. This transition is accompanied by a large hysteresis loop within which photoinduced transition between CDW and CP can be driven by selecting the excitation photon energy.
authors.affiliation: Department of Advanced Materials Science, University of Tokyo, Kashiwa, Chiba, 277-8561, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Matsuzaki
authors.forename: T
authors.initials: T
authors.lastname: Matsuoka
authors.forename: H
authors.initials: H
authors.lastname: Kishida
authors.forename: K
authors.initials: K
authors.lastname: Takizawa
authors.forename: H
authors.initials: H
authors.lastname: Miyasaka
authors.forename: K
authors.initials: K
authors.lastname: Sugiura
authors.forename: M
authors.initials: M
authors.lastname: Yamashita
authors.forename: H
authors.initials: H
authors.lastname: Okamoto