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  1. Article

    Open Access

    Biexciton in one-dimensional Mott insulators

    Mott insulators sometimes show dramatic changes in their electronic states after photoirradiation, as indicated by photoinduced Mott-insulator-to-metal transition. In the photoexcited states of Mott insulators...

    T. Miyamoto, T. Kakizaki, T. Terashige, D. Hata, H. Yamakawa in Communications Physics (2019)

  2. Article

    Open Access

    Probing ultrafast spin-relaxation and precession dynamics in a cuprate Mott insulator with seven-femtosecond optical pulses

    A charge excitation in a two-dimensional Mott insulator is strongly coupled with the surrounding spins, which is observed as magnetic-polaron formations of doped carriers and a magnon sideband in the Mott-gap ...

    T. Miyamoto, Y. Matsui, T. Terashige, T. Morimoto, N. Sono in Nature Communications (2018)

  3. No Access

    Article

    Mott transition by an impulsive dielectric breakdown

    Irradiation with a strong terahertz electric-field pulse is found to induce a Mott transition in an organic molecular compound. The metallization is attributed to an impulsive dielectric breakdown.

    H. Yamakawa, T. Miyamoto, T. Morimoto, T. Terashige, H. Yada, N. Kida in Nature Materials (2017)

  4. Article

    Open Access

    Novel electronic ferroelectricity in an organic charge-order insulator investigated with terahertz-pump optical-probe spectroscopy

    In electronic-type ferroelectrics, where dipole moments produced by the variations of electron configurations are aligned, the polarization is expected to be rapidly controlled by electric fields. Such a featu...

    H. Yamakawa, T. Miyamoto, T. Morimoto, H. Yada, Y. Kinoshita in Scientific Reports (2016)

  5. No Access

    Article

    An on-line advisory control system for the lactic acid fermentation process

    A fuzzy expert system was developed for online diagnosing and controlling of bioprocesses. The system was constructed in object-oriented Smalltalk/V for diagnosing and controlling of bioprocesses. Lactic acid ...

    M. Nakajima, C. von Numershs, H. Yada, T. Siimes in Applied Microbiology and Biotechnology (1994)

  6. No Access

    Article

    Discussion of “A mechanism for the formation of lower bainite”

    H. Yada in Metallurgical Transactions A (1991)