Gigantic Photoresponse in ¼-Filled-Band Organic Salt (EDO-TTF) 2 PF 6-Reference-Cited by-同舟云学术

Gigantic Photoresponse in ¼-Filled-Band Organic Salt (EDO-TTF) 2 PF 6

Published:2005-01-07 Issue:5706 Volume:307 Page:86-89
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Chollet Matthieu¹²³⁴⁵,Guerin Laurent¹²³⁴⁵,Uchida Naoki¹²³⁴⁵,Fukaya Souichi¹²³⁴⁵,Shimoda Hiroaki¹²³⁴⁵,Ishikawa Tadahiko¹²³⁴⁵,Matsuda Kazunari¹²³⁴⁵,Hasegawa Takumi¹²³⁴⁵,Ota Akira¹²³⁴⁵,Yamochi Hideki¹²³⁴⁵,Saito Gunzi¹²³⁴⁵,Tazaki Ryoko¹²³⁴⁵,Adachi Shin-ichi¹²³⁴⁵,Koshihara Shin-ya¹²³⁴⁵

Affiliation:

1. Department of Materials Science, Tokyo Institute of Technology, 2-12-1 Oh-okayama, Meguro-ku, Tokyo 152-8551, Japan.

2. Groupe Matière Condensée et Matériaux, Centre National de la Recherche Scientifique, Unite Mixte de Recherche-6626, Université de Rennes 1, Rennes, France.

3. Kanagawa Academy of Science and Technology and Japan Science and Technology Agency (JST), Precursory Research for Embryonic Science and Technology (PRESTO), 3-2-1, Sakado, Takatsu-ku, Kawasaki 213-0012, Japan.

4. Department of Physics, Tokyo Institute of Technology, Japan.

5. Division of Chemistry, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan.

Abstract

We report that the organic salt (EDO-TTF) 2 PF 6 with ¾-filled-band (¼-filled in terms of holes), which forms an organic metal with strong electron and lattice correlation, shows a highly sensitive response to photoexcitation. An ultrafast, photoinduced phase transition from the insulator phase to the metal phase can be induced with very weak excitation intensity at near room temperature. This response makes the material attractive for applications in switching devices with room-temperature operation. The observed photo-induced spectroscopic change shows that this photoinduced phase transition process is caused by the cooperative melting of charge ordering assisted by coherent phonon generation.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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