Hybrid manipulation of solids by using 6 fs near infrared and teraheltz lights
Project/Area Number |
16K13814
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Research Category |
Grant-in-Aid for Challenging Exploratory Research
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Allocation Type | Multi-year Fund |
Research Field |
Condensed matter physics I
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Research Institution | Tohoku University |
Principal Investigator |
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Project Period (FY) |
2016-04-01 – 2018-03-31
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Project Status |
Completed (Fiscal Year 2017)
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Budget Amount *help |
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2016: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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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 |
Outline of Final Research Achievements |
i)Polarization selectivity of light-field-induced charge localization was investigated in an organic metal α-(BEDT-TTF)2I3 with a triangular lattice. Dependences of transient reflectivity spectra on polarizations of the 7-fs pump and probe lights indicate that a short-range charge order (CO) is efficiently induced from the metallic phase for the pump polarization perpendicular to the 1010-type CO axis. ii)The time-domain waveform of the terahertz (THz) electric field emitted from the same compound can be significantly modulated depending on incident fluence of femtosecond pulses. As revealed by time-resolved experiments, this modulation arises from the cooperative nature of photoinduced melting of the charge order accompanying quenching of infrared-activity of the intermolecular vibrations which strongly couple with the emission. iii)We have shown that the phonon absorption (for a short-range) and the THz generation (for a long-range) are available for detecting strong field effects.
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Report
(3 results)
Research Products
(50 results)
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[Journal Article] Polarization selectivity of charge localization induced by 7-fs nearly single-cycle light-field in an organic metal2017
Author(s)
Y. Kawakami, Y. Yoneyama, T. Amano, H. Itoh, K. Yamamoto, Y. Nakamura, H. Kishida, T. Sasaki, S. Ishihara, Y. Tanaka, K. Yonemitsu, and S. Iwai
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Journal Title
Related Report
Peer Reviewed
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[Journal Article] Polarization selectivity of charge localization induced by 7-fs nearly single-cycle light-field in an organic metal2017
Author(s)
Y. Kawakami, Y. Yoneyama, T. Amano, H. Itoh, K. Yamamoto, Y. Nakamura, H. Kishida, T. Sasaki, S. Ishihara, Y. Tanaka, K. Yonemitsu, and S. Iwai
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Journal Title
Phys. Rev. B (rapid communication)
Volume: 印刷中
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Journal Article] Ultrafast response of plasmalike reflectivity edge in (TMTTF)2AsF6 driven by a 7-fs 1.5-cycle strong-light field2016
Author(s)
Y. Naitoh, Y. Kawakami, T. Ishikawa, Y. Sagae, H. Itoh, K. Yamamoto, T. Sasaki, M. Dressel, S. Ishihara, Y. Tanaka, K. Yonemitsu, S. Iwai
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Journal Title
Phisical Review B
Volume: 93
Issue: 16
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
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[Presentation] Polarization Selectivity of Charge Localization Induced by 7-fs Nearly Single-Cycle Light-Field in an Organic Metal2017
Author(s)
Y. Kawakami, Y. Yoneyama, T. Amano, H. Itoh, K. Yamamoto, Y. Nakamura, H. Kishida, T. Sasaki, S. Ishihara, Y. Tanaka, K. Yonemitsu and S. Iwai
Organizer
12th International Symposium on Crystalline Organic Metals, Superconductors and Magnets (ISCOM2017)
Related Report
Int'l Joint Research
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[Presentation] Ultrafast orbital excitation by 6 fs pulse in V2O32017
Author(s)
Y. Kawakami, T. Kato, Y. Yoneyama, T. Amano, H. Itoh, K. Itoh, T. Sasaki, Y. Nakamura, H. Kishida, L. Cario, E. Janod, B. Corraze, M. Lorenc and S. Iwai
Organizer
6th International Conferences on Photoinduced Phase Transitions (PIPT6)
Related Report
Int'l Joint Research
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