Hydrostatic pressure effect on photoinduced insulator-to-metal transition in the layered organic salt α- (BEDT-TTF)2 I3

Shinichiro Iwai, K. Yamamoto, F. Hiramatsu, H. Nakaya, Yohei Kawakami, K. Yakushi

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

The effect of high pressure on the photoinduced insulator-to-metal transition in charge-ordered [bis(ethylenedithio)]tetrathiafulvalene (BEDT-TTF) salt α- (BEDT-TTF)2 I3 was investigated using femtosecond spectroscopy under hydrostatic pressure. By applying pressure (P), the lifetime of the initially produced microscopic metallic domain becomes shorter, reflecting that condensation to the semimacroscopic metallic state is disturbed for P<0.5 GPa. However, condensation is promoted for P=0.5-1 GPa, thereby enhancing the nonlinearity of the photoinduced insulator-to-metal transition. Such nonmonotonous pressure dependence suggests competition between the increase of electronic bandwidth and photoinduced anisotropic lattice strain under pressure.

Original languageEnglish
Article number125131
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume77
Issue number12
DOIs
Publication statusPublished - 2008 Mar 27

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Hydrostatic pressure effect on photoinduced insulator-to-metal transition in the layered organic salt α- (BEDT-TTF)2 I3'. Together they form a unique fingerprint.

  • Cite this