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Phys. Rev. Lett. 90, 046401 (2003) [4 pages]

Novel Optical and Magnetic Bistability and Photoinduced Transition in a One-Dimensional Halogen-Bridged Binuclear Pt Complex

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H. Matsuzaki1, T. Matsuoka1, H. Kishida1, K. Takizawa2, H. Miyasaka2, K. Sugiura2, M. Yamashita2, and H. Okamoto1,3,*
1Department of Advanced Materials Science, University of Tokyo, Kashiwa, Chiba, 277-8561, Japan
2Department of Chemistry, Tokyo Metropolitan University, Hachioji, Tokyo, 192-0397, Japan
3Correlated Electron Research Center (CERC), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, 305-0046, Japan

Received 18 July 2002; published 28 January 2003

In iodine-bridged binuclear Pt compounds, R4[Pt2(pop)4I]nH2O and R2′[Pt2(pop)4I]nH2O (pop=P2O5H22-), 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)2NH2+ 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.

© 2003 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.90.046401
DOI:
10.1103/PhysRevLett.90.046401
PACS:
71.30.+h, 71.45.Lr, 78.30.Hv, 78.40.Ha

*Corresponding author.

Email address: okamotoh@k.u-tokyo.ac.jp

 
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