Ultrafast insulator-to-metal switching by photoinduced Mott transition

S. Iwai; Y. Okimoto; M. Ono; H. Matsuzaki; A. Maeda; H. Kishida; H. Okamoto; Y. Tokura

Ultrafast insulator-to-metal switching by photoinduced Mott transition

S. Iwai, Y. Okimoto, M. Ono, H. Matsuzaki, A. Maeda, H. Kishida, H. Okamoto, Y. Tokura

SCI - Physics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

We demonstrated the ultrafast photoinduced Mott transition from a charge transfer (CT) insulator to a metal in a halogen-bridged Ni chain compound by visible-mid IR pump-probe reflection spectroscopy. Upon the excitation of the CT band, the spectral weight of the gap transition is transferred to the inner-gap region. When the excitation density exceeds 0.1 per Ni site, the Drude-like high-reflection band appears in the infrared region, indicating the formation of a metallic state. The photogeneration of the metallic state and the subsequent recovery of the original insulating state occur within a few picoseconds.

Original language	English
Title of host publication	International Conference on Ultrafast Phenomena, UP 2004
Publisher	Optica Publishing Group (formerly OSA)
ISBN (Electronic)	9781557528209
Publication status	Published - 2004
Event	International Conference on Ultrafast Phenomena, UP 2004 - Niigata, Japan Duration: 2004 Jul 25 → 2004 Jul 30

Publication series

Name	Optics InfoBase Conference Papers

Conference

Conference	International Conference on Ultrafast Phenomena, UP 2004
Country/Territory	Japan
City	Niigata
Period	04/7/25 → 04/7/30

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Mechanics of Materials

Cite this

Iwai, S, Okimoto, Y, Ono, M, Matsuzaki, H, Maeda, A, Kishida, H, Okamoto, H & Tokura, Y 2004, Ultrafast insulator-to-metal switching by photoinduced Mott transition. in International Conference on Ultrafast Phenomena, UP 2004., TuA7, Optics InfoBase Conference Papers, Optica Publishing Group (formerly OSA), International Conference on Ultrafast Phenomena, UP 2004, Niigata, Japan, 04/7/25.

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title = "Ultrafast insulator-to-metal switching by photoinduced Mott transition",

abstract = "We demonstrated the ultrafast photoinduced Mott transition from a charge transfer (CT) insulator to a metal in a halogen-bridged Ni chain compound by visible-mid IR pump-probe reflection spectroscopy. Upon the excitation of the CT band, the spectral weight of the gap transition is transferred to the inner-gap region. When the excitation density exceeds 0.1 per Ni site, the Drude-like high-reflection band appears in the infrared region, indicating the formation of a metallic state. The photogeneration of the metallic state and the subsequent recovery of the original insulating state occur within a few picoseconds.",

author = "S. Iwai and Y. Okimoto and M. Ono and H. Matsuzaki and A. Maeda and H. Kishida and H. Okamoto and Y. Tokura",

note = "Publisher Copyright: {\textcopyright} 1999 Optical Society of America.; International Conference on Ultrafast Phenomena, UP 2004 ; Conference date: 25-07-2004 Through 30-07-2004",

year = "2004",

language = "English",

series = "Optics InfoBase Conference Papers",

publisher = "Optica Publishing Group (formerly OSA)",

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TY - GEN

T1 - Ultrafast insulator-to-metal switching by photoinduced Mott transition

AU - Iwai, S.

AU - Okimoto, Y.

AU - Ono, M.

AU - Matsuzaki, H.

AU - Maeda, A.

AU - Kishida, H.

AU - Okamoto, H.

AU - Tokura, Y.

PY - 2004

Y1 - 2004

N2 - We demonstrated the ultrafast photoinduced Mott transition from a charge transfer (CT) insulator to a metal in a halogen-bridged Ni chain compound by visible-mid IR pump-probe reflection spectroscopy. Upon the excitation of the CT band, the spectral weight of the gap transition is transferred to the inner-gap region. When the excitation density exceeds 0.1 per Ni site, the Drude-like high-reflection band appears in the infrared region, indicating the formation of a metallic state. The photogeneration of the metallic state and the subsequent recovery of the original insulating state occur within a few picoseconds.

AB - We demonstrated the ultrafast photoinduced Mott transition from a charge transfer (CT) insulator to a metal in a halogen-bridged Ni chain compound by visible-mid IR pump-probe reflection spectroscopy. Upon the excitation of the CT band, the spectral weight of the gap transition is transferred to the inner-gap region. When the excitation density exceeds 0.1 per Ni site, the Drude-like high-reflection band appears in the infrared region, indicating the formation of a metallic state. The photogeneration of the metallic state and the subsequent recovery of the original insulating state occur within a few picoseconds.

UR - http://www.scopus.com/inward/record.url?scp=85136122699&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85136122699&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:85136122699

T3 - Optics InfoBase Conference Papers

BT - International Conference on Ultrafast Phenomena, UP 2004

PB - Optica Publishing Group (formerly OSA)

T2 - International Conference on Ultrafast Phenomena, UP 2004

Y2 - 25 July 2004 through 30 July 2004

ER -

Ultrafast insulator-to-metal switching by photoinduced Mott transition

Abstract

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