Ultrafast photo-induced insulator-to-metal transition in the spin density wave system of (TMTSF) 2PF 6

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) 2PF 6 [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
JournalPhysica B: Condensed Matter
Volume405
Issue number11 SUPPL.
DOIs
Publication statusPublished - Jun 1 2010
Externally publishedYes

Fingerprint

Spin density waves
Transition metals
transition metals
insulators
Optical conductivity
Photoexcitation
photoexcitation
Ground state
Pumps
pumps
reflectance
conductivity
ground state
probes
Experiments

Keywords

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

ASJC Scopus subject areas

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

Cite this

Ultrafast photo-induced insulator-to-metal transition in the spin density wave system of (TMTSF) 2PF 6 . / Watanabe, Shinichi; Kondo, Ryusuke; Kagoshima, Seiichi; Shimano, Ryo.

In: Physica B: Condensed Matter, Vol. 405, No. 11 SUPPL., 01.06.2010.

Research output: Contribution to journalArticle

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