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

研究成果: Article › 査読

抄録

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.

本文言語	English
ページ（範囲）	S360-S362
ジャーナル	Physica B: Condensed Matter
巻	405
号	11 SUPPL.
DOI	https://doi.org/10.1016/j.physb.2009.10.063
出版ステータス	Published - 2010 6月 1
外部発表	はい

ASJC Scopus subject areas

電子材料、光学材料、および磁性材料
凝縮系物理学
電子工学および電気工学

文献へのアクセス

10.1016/j.physb.2009.10.063

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引用スタイル

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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",

note = "Funding Information: This work was partially supported by Grant-in-Aid for Scientific Research on Innovative Areas 20110005 and that for Young Scientists (B) 20740170 from the Ministry of Education, Culture, Sports, Science and Technology, Japan.",

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T1 - Ultrafast photo-induced insulator-to-metal transition in the spin density wave system of (TMTSF)2PF6

AU - Watanabe, Shinichi

AU - Kondo, Ryusuke

AU - Kagoshima, Seiichi

AU - Shimano, Ryo

N1 - Funding Information: This work was partially supported by Grant-in-Aid for Scientific Research on Innovative Areas 20110005 and that for Young Scientists (B) 20740170 from the Ministry of Education, Culture, Sports, Science and Technology, Japan.

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Y1 - 2010/6/1

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.

KW - Optical pump and terahertz probe experiments

KW - Organic conductors

KW - Quasiparticle dynamics

KW - Spin density wave

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