An organic thyristor

F. Sawano, I. Terasaki, H. Mori, T. Mori, M. Watanabe, Naoshi Ikeda, Yoshio Nogami, Y. Noda

Research output: Contribution to journalArticle

161 Citations (Scopus)

Abstract

Thyristors are a class of nonlinear electronic device that exhibit bistable resistance - that is, they can be switched between two different conductance states. Thyristors are widely used as inverters (direct to alternating current converters) and for the smooth control of power in a variety of applications such as motors and refrigerators. Materials and structures that exhibit nonlinear resistance of this sort are not only useful for practical applications: they also provide systems for exploring fundamental aspects of solid-state and statistical physics. Here we report the discovery of a giant nonlinear resistance effect in the conducting organic salt \[thetas]-(BEDT-TTF) "2CsCo(SCN)"4, the voltage-current characteristics of which are essentially the same as those of a conventional thyristor. This intrinsic organic thyristor works as an inverter, generating an alternating current when a static direct-current voltage is applied. Whereas conventional thyristors consist of a series of diodes (their nonlinearity comes from interface effects at the p-n junctions), the present salt exhibits giant nonlinear resistance as a bulk phenomenon. We attribute the origin of this effect to the current-induced melting of insulating charge-order domains, an intrinsically non-equilibrium phenomenon in the sense that ordered domains are melted by a steady flow.

Original languageEnglish
Pages (from-to)522-524
Number of pages3
JournalNature
Volume437
Issue number7058
DOIs
Publication statusPublished - Sep 22 2005

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Salts
Physics
Freezing
Equipment and Supplies
BEDT-TTF

ASJC Scopus subject areas

  • General

Cite this

Sawano, F., Terasaki, I., Mori, H., Mori, T., Watanabe, M., Ikeda, N., ... Noda, Y. (2005). An organic thyristor. Nature, 437(7058), 522-524. https://doi.org/10.1038/nature04087

An organic thyristor. / Sawano, F.; Terasaki, I.; Mori, H.; Mori, T.; Watanabe, M.; Ikeda, Naoshi; Nogami, Yoshio; Noda, Y.

In: Nature, Vol. 437, No. 7058, 22.09.2005, p. 522-524.

Research output: Contribution to journalArticle

Sawano, F, Terasaki, I, Mori, H, Mori, T, Watanabe, M, Ikeda, N, Nogami, Y & Noda, Y 2005, 'An organic thyristor', Nature, vol. 437, no. 7058, pp. 522-524. https://doi.org/10.1038/nature04087
Sawano F, Terasaki I, Mori H, Mori T, Watanabe M, Ikeda N et al. An organic thyristor. Nature. 2005 Sep 22;437(7058):522-524. https://doi.org/10.1038/nature04087
Sawano, F. ; Terasaki, I. ; Mori, H. ; Mori, T. ; Watanabe, M. ; Ikeda, Naoshi ; Nogami, Yoshio ; Noda, Y. / An organic thyristor. In: Nature. 2005 ; Vol. 437, No. 7058. pp. 522-524.
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