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

Shinichi Watanabe; Ryusuke Kondo; Seiichi Kagoshima; Ryo Shimano

doi:10.1016/j.physb.2009.10.063

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 journal › Article › peer-review

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 language	English
Pages (from-to)	S360-S362
Journal	Physica B: Condensed Matter
Volume	405
Issue number	11 SUPPL.
DOIs	https://doi.org/10.1016/j.physb.2009.10.063
Publication status	Published - Jun 1 2010
Externally published	Yes

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

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.",

keywords = "Optical pump and terahertz probe experiments, Organic conductors, Quasiparticle dynamics, Spin density wave",

author = "Shinichi Watanabe and Ryusuke Kondo and Seiichi Kagoshima and Ryo Shimano",

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AU - Watanabe, Shinichi

AU - Kondo, Ryusuke

AU - Kagoshima, Seiichi

AU - Shimano, Ryo

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N2 - 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.

AB - 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.

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KW - Quasiparticle dynamics

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