大瀧貴史（博士3年）

■研究トピック
old : Organic semiconductors, Nonlinear optics, Ultrafast phenomena
now : Quantum optics

■業績

T. Otaki, Y. Yahagi, and H. Matsueda, “Spectral Properties of Composite Excitations in the t-J Model”, J. Phys. Soc. Jpn. 86, 084709 (2017).
H. Yada, H. Sekine, T. Miyamoto, T. Terashige, R. Uchida, T. Otaki, F. Maruike, N. Kida, T. Uemura, S. Watanabe, T. Okamoto, J. Takeya, and H. Okamoto, “Evaluating intrinsic mobility from transient terahertz conductivity spectra of microcrystal samples of organic molecular semiconductors”, Appl. Phys. Lett. 115, 143301 (2019).
T. Otaki, T. Terashige, J. Tsurumi, T. Miyamoto, N. Kida, S. Watanabe, T. Okamoto, J. Takeya, and H. Okamoto, “Evaluations of nonlocal electron-phonon couplings in tetracene, rubrene and C₁₀-DNBDT-NW based on density functional theory”, Phys. Rev. B 102, 245201 (2020).
K. Asada, T. Miyamoto, H. Yamakawa, J. Hirata, N. Takamura, T. Morimoto, K. Suzuki, T. Otaki, N. Kida, T. Nakamura, and H. Okamoto, “Ultrafast control of electronic states by a terahertz electric field pulse in the quasi-one-dimensional organic ferroelectric TMTTF₂PF₆”, Phys. Rev. B 104, 195148 (2021).
T. Morimoto, H. Suzuki, T. Otaki, N. Sono, N. Kida, T. Miyamoto, and H. Okamoto, “Ionic to neutral conversion induced by resonant excitation of molecular vibrations coupled to intermolecular charge transfer”, Phys. Rev. Research 3, L042028 (2021).
Y. Han, T. Miyamoto, T. Otaki, N. Takamura, N. Kida, N. Osakabe, J. Tsurumi, S. Watanabe, T. Okamoto, J. Takeya, and H. Okamoto, “Scattering mechanism of hole carriers in organic molecular semiconductors deduced from analyses of terahertz absorption spectra using Drude–Anderson model”, Appl. Phys. Lett. 120, 053302 (2022).
N. Sono*, T. Otaki*, T. Kitao, T. Yamakawa, D. Sakai, T. Morimoto, T. Miyamoto, and H. Okamoto, “Phonon-dressed states in an organic Mott insulator” (*These authors contributed equally), Commun. Phys. 5, 72 (2022).
宮本辰也、大瀧貴史、貴田徳明、岡本博、『有機半導体におけるキャリアダイナミクスの先端分光計測』、計測と制御、60巻3号p.176-181(2021).

■メールアドレス
otaki.takashi.s2（アットマーク）dc.tohoku.ac.jp

■居室
電子情報システム・応物系1号館　300号室