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J. Phys. Soc. Jpn. 74 (2005) pp. 511-514  |Next Article|  |Table of Contents|
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Letters

Photo-induced Insulator–Metal Transition in an Organic Conductor α-(BEDT-TTF)2I3

Naoya Tajima, Jun-ichi Fujisawa, Nobuko Naka, Teruya Ishihara, Reizo Kato, Yutaka Nishio1 and Koji Kajita1

RIKEN, 2-1 Hirosawa, Wako, Saitama, 351-0198
1Department of Physics, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510

(Received August 28, 2004)

Photo-switching between a charge-ordered insulating (CO) state and a metallic (M) state has been successfully realized in an organic conductor α-(BEDT-TTF)2I3 at low temperatures. The large photocurrent induced by the pulsed laser excitation with a photon energy of 2.6 eV had two components. The fast-decaying component had a life time of 120 ns. The subsequent one rose slowly (after about 0.7 µs) and remained as long as an electric field above 470 V/cm was applied. The dependences of these two components on laser power, applied voltage, and the onset of pulsed voltage were examined. It has been clearly demonstrated that the second component has prominent thresholds for both laser power and voltage. For each component, the resistivity decreased by about seven orders of magnitude from about 4 MΩ·cm to less than 0.4 Ω·cm at 4 K. ©2005 The Physical Society of Japan

URL: http://jpsj.ipap.jp/link?JPSJ/74/511/
DOI: 10.1143/JPSJ.74.511


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References | Citing Articles (42)

  1. H. Taniguchi, M. Miyashita, K. Uchiyama, K. Satoh, N. Mori, H. Okamoto, K. Miyagawa, K. Kanoda, M. Hedo and Y. Uwatoko: J. Phys. Soc. Jpn. 72 (2003) 468[JPSJ].
  2. M. Maesato, Y. Kaga, R. Kondo and S. Kagoshima: Rev. Sci. Instrum. 71 (2000) 176[AIP Scitation].
  3. N. Tajima, M. Tamura, Y. Nishio, K. Kajita and Y. Iye: J. Phys. Soc. Jpn. 69 (2000)543[JPSJ].
  4. N. Tajima, A. Ebina-Tajima, M. Tamura, Y. Nishio and K. Kajita: J. Phys. Soc. Jpn. 71 (2002) 1832[JPSJ].
  5. S. Tomić, J. R. Cooper, D. Jérome and K. Bechgaard: Phys. Rev. Lett. 62 (1989) 462[APS].
  6. N. Toyota, Y. Abe, T. Kuwabara, E. Negishi and H. Matsui: J. Phys. Soc. Jpn. 72 (2003) 2714[JPSJ].
  7. S. Uji, H. Shinagawa, T. Terashima, T. Yakabe, Y. Terai, M. Tokumoto, A. Kobayashi, H. Tanaka and H. Kobayashi: Nature 410 (2001) 908[CrossRef].
  8. T. Takahashi, D. Jérome and K. Bechgaard: J. Phys. Lett. (Paris) 51 (1982) L565.
  9. D. Andres, M. V. Kartsovnik, P. D. Grigoriev and H. Müller: Phys. Rev. B 68 (2003) 201101[APS](R).
  10. K. Bender, I. Hennig, D. Schweitzer, K. Dietz, H. Endres and H. J. Keller: Mol. Cryst. Liq. Cryst. 108 (1984) 359[CrossRef].
  11. R. P. Shibaeva, V. F. Kaminskii and E. B. Yagubskii: Mol. Cryst. Liq. Cryst. 119 (1985) 361.
  12. H. Kobayashi, R. Kato, A. Kobayashi, Y. Nishio, K. Kajita and W. Sasaki: Chem. Lett. (1986) 833.
  13. H. Kobayashi, R. Kato, A. Kobayashi, Y. Nishio, K. Kajita and W. Sasaki: Chem. Lett. (1986) 789.
  14. H. Kino and H. Fukuyama: J. Phys. Soc. Jpn. 64 (1995) 1877[JPSJ].
  15. Y. Takano, K. Hiraki, H. M. Yamamoto, T. Nakamura and T. Takahashi: J. Phys. Chem. Solids 62 (2001) 393[CrossRef].
  16. K. Miyano, T. Tanaka, Y. Tomioka and Y. Tokura: Phys. Rev. Lett. 78 (1997) 4257[APS].
  17. M. Fiebig, K. Miyano, Y. Tomioka and Y. Tokura: Appl. Phys. B 71 (2000) 211[CrossRef].
  18. F. O. Karutz, J. U. von Schütz, H. Wachtel and H. C. Wolf: Phys. Rev. Lett. 81 (1998) 140[APS].
  19. N. Uchida, S. Koshihara, T. Ishikawa, A. Ota, S. Fukaya, M. Chollet, H. Yamochi and G. Saito: J. Phys. IV (Paris) 114 (2004) 143.
  20. N. Tajima, J. Fujisawa, R. Kato, T. Ishihara, H. Taniguchi, Y. Nishio and K. Kajita: in preparation.
  21. Details of the magnetic field effects on the photoconductivity will be described in the next paper.
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