Photophysics Laboratory (Kimura Group) 光物性研究室(木村グループ)

Our research interests
Physical properties of solids, such as magnetism and ferroelectricity, and life phenomena, such as redox and photosynthesis, originate from the electronic states in materials and their interactions. These research fields are known as condensed-matter physics and quantum biology. To clarify the electronic states provides us not only the information of the origins of the physical properties and life phenomena but also the expectation and creation of novel functionalities. To visualize of the change of the electronic state, we also develop novel spectroscopic techniques using synchrotron radiation and other quantum beams. On the basis of the obtained information of electronic structures, we are aiming to develop novel physical properties of new materials.

Introduction of Research group @ Osaka Univ.
IMS Annual review: 2013, 2012, 2011, 2010, 2009, 2008, 2007

A novel photoemission spectrometer, namely Symmetry- And Momentum-Resolved electronic structure Analysis Instrument (SAMRAI) at UVSOR, a high-brilliance low-energy synchrotron radiation facility, developed by our group.






Press release
  1. "Relaxation dynamics of [Re(CO)2(bpy){P(OEt)3}2](PF6) in TEOA solvent measured by time-resolved attenuated total reflection terahertz spectroscopy"
    P. N. Nguyen, H. Watanabe, Y. Tamaki, O. Ishitani, S. Kimura
    Scientific Reports 9, 11772 (2019) [7 pages].
  2. "Non-trivial surface states of samarium hexaboride at the (111) surface",
    Y. Ohtsubo, Y. Yamashita, K. Hagiwara, S. Ideta, K. Tanaka, R. Yukawa, K. Horiba, H. Kumigashira, K. Miyamoto, T. Okuda, W. Hirano, F. Iga, S. Kimura
    Nat. Commun. 10, 2298 (2019) [7 pages].
  3. "Surface Kondo effect and non-trivial metallic state of the Kondo insulator YbB12",
    K. Hagiwara, Y. Ohtsubo, M. Matsunami, S. Ideta, K. Tanaka, H. Miyazaki, J. E. Rault, P. Le Fèvre, F. Bertran, A. Taleb-Ibrahimi, R. Yukawa, M. Kobayashi, K. Horiba, H. Kumigashira, K. Sumida, T. Okuda, F. Iga, S. Kimura,
    Nat. Commun. 7, 12690 (2016) [7 pages].
  4. "Surface Tomonaga-Luttinger-Liquid State on Bi/InSb(001)",
    Y. Ohtsubo, J. Kishi, K. Hagiwara, P. L. Fevre, F. Bertran, A. Taleb-Ibrahimi, M. Matsunami, K. Tanaka, S. Kimura,
    Phys. Rev. Lett. 115, 256404 (2015) [5pages].
  5. "Quadratic Fermi node in a 3D strongly correlated semimetal",
    T. Kondo, M. Nakayama, R. Chen, J. J. Ishikawa, E.-G. Moon, T. Yamamoto, Y. Ota, W. Malaeb, H. Kanai, Y. Nakashima, Y. Ishida, R. Yoshida, H. Yamamoto, M. Matsunami, S. Kimura, N. Inami, K. Ono, H. Kumigashira, S. Nakatsuji, L. Balents, S. Shin,
    Nat. Commun. 6, 10042 (2015) [8 pages]
  6. "Role of Quantum and Surface-State Effects in the Bulk Fermi Level Position of Ultrathin Bi films",
    T. Hirahara, T. Shirai, A. Takayama, T. Hajiri, M. Matsunami, K. Tanaka, S. Kimura, S. Hasegawa, K. Kobayashi,
    Phys. Rev. Lett. 115, 106803 (2015) [5 pages].
  7. "Electron-phonon coupling investigation via phonon dispersion measurement in graphite by angle-resolved photoelectron spectroscopy",
    S. Tanaka, M. Matsunami, S. Kimura,
    Sci. Rep. 3, 3031 (2013) [6 pages].
  8. "One-Dimensional Uneven Peanut-Shaped C60 Polymer: A Quantum Electronic System in Riemannian Space",
    J. Onoe, T. Ito, S. Kimura, H. Shima, Y. Toda, H. Yoshioka,
    Fullerene, Nanotubes, and Carbon Nanostructures 20, 1-16 (2012).
  9. "Existence of Heavy Fermions in the Antiferromagnetic Phase of CeIn3",
    T. Iizuka, T. Mizuno, B. H. Min, Y. S. Kwon, S. Kimura,
    J. Phys. Soc. Jpn. 81, 043703 (2012) [4 pages].
  10. "Interfacing 2D and 3D Topological Insulators: Bi(111) Bilayer on Bi2Te3",
    T. Hirahara, G. Bihlmayer, Y. Sakamoto, M. Yamada, H. Miyazaki, S. Kimura, S. Blugel, S. Hasegawa,
    Phys. Rev. Lett.107, 166801 (2011) (5 pages).
  11. "Nodeless superconducting gap in AxFe2Se2 (A = K, Cs) revealed by angle-resolved photoemission spectroscopy",
    Y. Zhang, L. X. Yang, M. Xu, Z. R. Ye, F. Chen, C. He, H. C. Xu, J. Jiang, B. P. Xie, J. J. Ying, X. F. Wang, X. H. Chen, J. P. Hu, M. Matsunami, S. Kimura, D. L. Feng,
    Nat. Mater. 10, 273-277 (2011).
  12. "Electronic-Structure-Driven Magnetic Ordering in a Kondo Semiconductor CeOs2Al10",
    S. Kimura, T. Iizuka, H. Miyazaki, A. Irizawa, Y. Muro, T. Takabatake,
    Phys. Rev. Lett. 106, 056404 (2011) (4 pages).

  13. "Direct Observation of Momentum-Dependent Exchange Interaction in a Heisenberg Ferromagnet",
    H. Miyazaki, T. Ito, H.J. Im, S. Yagi, M. Kato, K. Soda, S. Kimura,

    Phys. Rev. Lett. 102, 227203 (2009) (4 pages).
  14. "Direct Observation of Dispersive Kondo Resonance Peaks in a Heavy-Fermion System",
    H. J. Im, T. Ito, H.-D. Kim, S. Kimura, K.E. Lee, J.B. Hong, Y.S. Kwon, A. Yasui, H. Yamagami,
    Phys. Rev. Lett. 100, 176402 (2008) (4 pages).
  15. "Tunable narrowband terahertz emission from mastered laser-electron beam interaction",
    S. Bielawski, C. Evain, T. Hara, M. Hosaka, M. Katoh, S. Kimura, A. Mochihashi, M. Shimada, C. Szwaj, T. Takahashi, Y. Takashima,
    Nat. Phys. 4, 390-393 (2008).

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