Ultrafast Coherent controlof electro-lattice by 10 fs infrared pulse
| Project/Area Number |
23244062
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Condensed matter physics I
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| Research Institution | Tohoku University |
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Principal Investigator |
IWAI Shinichiro 東北大学, 理学(系)研究科(研究院), 教授 (60356524)
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| Co-Investigator(Kenkyū-buntansha) |
YONEMITSU Kenji 中央大学, 理工学部, 教授 (60270823)
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| Co-Investigator(Renkei-kenkyūsha) |
ITOH Hirotake 東北大学, 大学院理学研究科, 助教 (70565978)
YAMAMOTO Kaoru 岡山理科大学, 理学部, 准教授 (90321603)
SASAKI Takahiko 東北大学, 金属材料研究所, 教授 (20241565)
SAITO Shingo (独)情報通信研究機構, 未来ICT研究所, 主任研究員 (80272532)
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| Project Period (FY) |
2011-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥47,970,000 (Direct Cost: ¥36,900,000、Indirect Cost: ¥11,070,000)
Fiscal Year 2014: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2013: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2012: ¥32,890,000 (Direct Cost: ¥25,300,000、Indirect Cost: ¥7,590,000)
Fiscal Year 2011: ¥8,580,000 (Direct Cost: ¥6,600,000、Indirect Cost: ¥1,980,000)
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| Keywords | 強相関電子系 / 光誘起相転移 / 超高速現象 / 有機伝導体 / 遷移金属酸化物 / コヒーレント制御 |
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| Outline of Final Research Achievements |
12 fs(2.5-cycle) and 7 fs (1.5-cycle, CEP stabilized )pulses in near infrared region have been developed. Those ultrashort pulses were utilized to clarify the initial dynamics of photoinduced phase transitions mainly in organic conductors(BEDT-TTF salts) . We captured the snapshots of i) Photoinduced melting of charge ordering begins with the coherent charge gap oscillation and ii) Photoinduced insulator to metal transition in dimer Mott insulator is driven by the interactions between intra-dimer exciton and the intra-dimer and inter-dimer vibrations.iii) Moreover, by applying strong 1.5-cycle light electric field of > 10 MV/cm, photoinduced charge ordering in organic metal was succeeded to realized. iv) Theoretical analysis considering the intra- and inter molecular degrees of freedom has been made; Conditions for charge localization and the repulsive-attractive conversion of interactions driven by strong light field were investigated for CW and pulsed light.
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Report
(5 results)
Research Products
(173 results)
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[Journal Article] Spontaneous Formation of Correlated Charge Coherence Induced by 1.5-Cycle Pulse in 1-D Organic Metal (TMTTF)_2AsF_62015
Author(s)
T. Ishikawa, Y. Sagae, Y. Naito, J. Ichimura, Y. Kawakami, H. Itoh, K. Yamamoto, K. Yakushi, S. Ishihara, T. Sasaki, K. Yonemitsu and S. Iwai
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Journal Title
Springer Proceedings in Physics (Ultrafast Phenomena XIX)
Volume: 162
Pages: 244-247
Related Report
Peer Reviewed
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[Journal Article] 10 fs Dynamics of Photoinduced Magnetic Transition in Double-Layered Charge Ordering in LuFe_2O_4 Under Interlayer Excitation2015
Author(s)
Y. Sagae, K. Yamada, T. Ishikawa, K. Itoh, H. Itoh, T. Sasaki, T. Nagata, J. Kano, T. Kambe, S. Ishihara, N. Ikeda and S. Iwai
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Journal Title
Springer Proceedings in Physics (Ultrafast Phenomena XIX)
Volume: 162
Pages: 252-256
Related Report
Peer Reviewed
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[Journal Article] Optical freezing of charge motion in an organic conductor2014
Author(s)
T. Ishikawa, Y. Sagae, Y. Naitoh, Y. Kawakami, H. Itoh, K. Yamamoto, K. Yakushi, H. Kishida, T. Sasaki, S. Ishihara, Y. Tanaka, K. Yonemitsu and S. Iwai
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Journal Title
Nature Communications
Volume: 5
Issue: 1
Pages: 5528-5528
DOI
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Journal Article] Coherent dynamics of photoinduced phase formation in a strongly correlated organic crystal2014
Author(s)
Yoshitaka Matsubara, Sho Ogihara, Jiro Itatani, Nobuya Maeshima, Kenji Yonemitsu, Tadahiko Ishikawa, Yoichi Okimoto, Shin-ya Koshihara, Takaaki Hiramatsu, Yoshiaki Nakano, Hideki Yamochi, Gunzi Saito, Ken Onda
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Journal Title
Phys. Rev. B
Volume: 89
Issue: 16
DOI
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Presentation] 10fs dynamics of photoinduced magnetic transition in double-layered charge ordering in Lufe_2O_4 under interlayer excitation2014
Author(s)
Y.Sagae, K.Yamada, T. Ishikawa, K.Itoh, H. Itoh, T. Sasaki, T.Nagata, J. Kano, T. Kambe, S. Ishihara, N. Ikeda and S. Iwai
Organizer
19th International Conference on Ultrafast Phenomena (UP2014)
Place of Presentation
Okinawa Convention Center（沖縄・宜野湾市）
Year and Date
2014-07-08
Related Report
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[Presentation] Spontaneous formation of correlated charge coherence induced by 1.5-cycle pulse in 1-D organic metal(TMTTF)_2AsF_62014
Author(s)
T. Ishikawa, Y. Sagae, Y. Naito, J. Ichimura, Y. Kawakami, H. Itoh, K. Yamamoto, K. Yakushi, S. Ishihara, T. Sasaki, K. Yonemitsu and S. Iwai
Organizer
19th International Conference on Ultrafast Phenomena (UP2014)
Place of Presentation
Okinawa Convention Center（沖縄・宜野湾市）
Year and Date
2014-07-07
Related Report
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[Presentation] Photoinduced growth of ferroelectric charge order in organic dimer-Mott insulator2012
Author(s)
K. Itoh, H. Itoh, S. Iwai, M. Naka, S. Ishihara, S, Saito, N. Yoneyama, T. Sasaki
Organizer
he 10th International Conference on Excitonic Processes in Condensed Matter, Nanostructured and Molecular Materials (EXCON2012)
Place of Presentation
Groningen, the Netherlands
Related Report
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[Presentation] Ultrafast snapshot of light-electron-vibration interactions in alpha-, theta-, kappa--type BEDT-TTF salts, The 9th International Symposium on Crystalline Organic Metals2011
Author(s)
Y.Kawakami, Y.Sakurai, H.Itoh, S.Iwai, T.Sasaki, K.Yamamoto, K.Yakushi
Organizer
Superconductors and Ferromagnets (ISCOM 2011)
Place of Presentation
Poznan-Gniezno, Poland
Year and Date
2011-09-27
Related Report
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[Presentation] Ultrafast Melting Of Charge Ordering In LuFe2O4 Probed By Terahertz Spectroscopy2011
Author(s)
Hirotake Itoh, Keisuke Itoh, Kohei Anjyo, Hideki Nakaya, Shinichiro Iwai, Sumio Ishihara, Shingo Saito, Hiroshi Akahama, Daisuke Ohishi, Takashi Kambe, Naoshi Ikeda
Organizer
16th International Conference on Luminescence (ICL'2011)
Place of Presentation
Ann Arbor, Michigan, USA
Year and Date
2011-06-29
Related Report
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