Strong optical nonlinearity and its ultrafast response associated with electron ferroelectricity in an organic conductor

Kaoru Yamamoto, Shinichiro Iwai, Sergiy Boyko, Akimitsu Kashiwazaki, Fukiko Hiramatsu, Chie Okabe, Nobuyuki Nishi, Kyuya Yakushi

研究成果: Article査読

116 被引用数 (Scopus)

抄録

We report experimental evidence for the generation of ferroelectric polarization in an organic conductor α-[bis(ethylenedithio) tetrathiafulvalene]2I3 obtained by optical second-harmonic generation. The spontaneous polarization emerges along with a metal-to-insulator transition that is driven by the Wigner crystallization of electrons. The strong optical nonlinearity and its ultrafast photoresponse demonstrated by this study exemplify the nature of the ferroelectric polarization that originates from the electron ordering.

本文言語English
論文番号074709
ジャーナルjournal of the physical society of japan
77
7
DOI
出版ステータスPublished - 2008 7

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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