Photoinduced Change in the Charge Order Pattern in the Quarter-Filled Organic Conductor(EDO−TTF)2PF6with a Strong Electron-Phonon Interaction

• DOI: 10.1103/physrevlett.101.067403
• Publication Date: 2008-08-06T16:02:52Z
• Authors: Ken Onda; Sho Ogihara; Kenji Yonemitsu; Nobuya Maeshima; Tadahiko Ishikawa; Yoichi Okimoto; Xiangfeng Shao; Yoshiaki Nakano; Hideki Yamochi; Gunzi Saito; Shin-ya Koshihara
• Keywords: Photoexcitation

The quasistable state in the photoinduced phase transition for quasi-one-dimensional quarter-filled organic conductor $(\mathrm{EDO}\mathrm{\text{\ensuremath{-}}}\mathrm{TTF}{)}_{2}{\mathrm{PF}}_{6}$ has been examined by ultrafast reflective measurements and time-dependent model calculations incorporating both electron-electron electron-phonon interactions. transient optical conductivity spectrum over a wide probe photon-energy range revealed that photoexcitation induced new type of charge-disproportionate state. Additionally, coherent incoherent oscillations dependent on photon energies were found, as predicted calculation.