Photoinduced Phase Transitions in Strongly Correlated Electron Systems

Shin-ya Koshihara; Shinichi Adachi; Shinichi Adachi; Yoichi Okimoto; Tadahiko Ishikawa; Ryo Fukaya; Keiki Fukumoto; Manabu Hoshino; Ken Onda; Ken Onda

doi:10.1364/QELS.2012.QM4G.7

Conference on Lasers and Electro-Optics 2012
OSA Technical Digest (Optica Publishing Group, 2012),
paper QM4G.7
•https://doi.org/10.1364/QELS.2012.QM4G.7

Photoinduced Phase Transitions in Strongly Correlated Electron Systems

Shin-ya Koshihara, Shinichi Adachi, Yoichi Okimoto, Tadahiko Ishikawa, Ryo Fukaya, Keiki Fukumoto, Manabu Hoshino, and Ken Onda

Quantum Electronics and Laser Science Conference 2012

San Jose, California United States
6–11 May 2012
ISBN: 978-1-55752-943-5

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Strongly Correlated Electron Systems (QM4G)

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S. Koshihara, S. Adachi, Y. Okimoto, T. Ishikawa, R. Fukaya, K. Fukumoto, M. Hoshino, and K. Onda, "Photoinduced Phase Transitions in Strongly Correlated Electron Systems," in Conference on Lasers and Electro-Optics 2012, OSA Technical Digest (Optica Publishing Group, 2012), paper QM4G.7.

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Abstract

The search for materials that show a phase transition triggered by weak external stimulation of light is an important and attractive target for photonic and materials science today. My talk reviews experimental evidence indicating that photo-injected local excitation can really trigger an electron-lattice coupled cooperative phenomenon named as photo-induced phase transition (PIPT: Photo-domino effect) in wide class of materials based on the dynamical x-ray technique combined with the ultrafast spectroscopy. Obtained results also demonstrate that ‘hidden phase’ in strongly correlated systems which never appears in the phase diagram under thermo-equilibrium condition plays an essential role for the gigantic photo-response of the strongly correlated electron systems.

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