Novel optical and magnetic bistability and photoinduced transition in a one-dimensional halogen-bridged binuclear pt complex.
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.
Matsuzaki
H
H
Department of Advanced Materials Science, University of Tokyo, Kashiwa, Chiba, 277-8561, Japan.
Matsuoka
T
T
Kishida
H
H
Takizawa
K
K
Miyasaka
H
H
Sugiura
K
K
Yamashita
M
M
Okamoto
H
H