Ultrafast photo-induced insulator-to-metal transition in the spin density wave system of (TMTSF)2PF6

Shinichi Watanabe, Ryusuke Kondo, Seiichi Kagoshima, Ryo Shimano

Research output: Contribution to journalArticle

Abstract

We demonstrate a photo-induced insulator-to-metal (I-M) transition in an organic linear chain compound (TMTSF)2PF6 [bis-(tetramethyl-tetraselenafulvalene)hexafluorophosphate] in the spin-density-wave (SDW) ground state by optical pump and terahertz probe experiments. We observe the collapse of SDW gap in the optical conductivity spectrum at 3ps after the photo-excitation, indicating the ultrafast I-M transition in the SDW system. Temporal evolution of the terahertz reflectivity change shows that the photo-induced metallic state sustains longer than 400 ps.

Original languageEnglish
Pages (from-to)S360-S362
JournalPhysica B: Condensed Matter
Volume405
Issue number11 SUPPL.
DOIs
Publication statusPublished - Jun 1 2010
Externally publishedYes

Keywords

  • Optical pump and terahertz probe experiments
  • Organic conductors
  • Quasiparticle dynamics
  • Spin density wave

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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