Shin, Shik
professor
solid state physics
University of Tokyo
Japan
Biography
We are investigating the properties of materials through photoemission spectroscopy implemented by lasers in the vacuum-ultraviolet to soft-x-ray region. Photoelectrons carry the complete information of the electrons in solids, namely, their energy, momentum, time, space, and spin. The photoemission spectrometer utilizing the monochromatic laser achieves the energy resolution of 70 μeV, which is the highest in the world. This enables us to directly observe the superconducting gaps and pseudo-gaps of novel superconductors and strongly-correlated materials, as well as the momentum-resolved electronic structures that are closely related to the transport properties of solids. We can also reveal the electron-phonon or –magnon interactions in solids. We are also performing time-resolved photoemission spectroscopy in order to know the photo-induced phenomena in superconductors, transition metal compounds, organic materials, and semiconductors. Furthermore, we are now developing photoelectron microscope in order to know the nano electronic structure in solids. Our aim is to have the nanometer size microscopy of electronic states.
Research Interest
Ultra-high resolution laser-photoemission study on the superconductors and the low dimensional materials Time-resolved laser-photoemission study on the photo-induced phenomena Laser photoelectron microscopy on the electronic states of nanomaterials
Publications
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Ultrafast Melting of Spin DensityWave Order in BaFe2As2 Observed by Time- and Angle-Resolved Photoemission Spectroscopy with Extreme-Ultraviolet Higher Harmonic Generation: H. Suzuki, K. Okazaki, T. Yamamoto, T. Someya, M. Okada, K. Koshiishi, M. Fujisawa, T. Kanai, N. Ishii, M. Nakajima, H. Eisaki, K. Ono, H. Kumigashira, J. Itatani, A. Fujimori and S. Shin, Phys. Rev. B 95 (2017) 165112(1-6).
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Suppression of supercollision carrier cooling in high mobility graphene on SiC(000-1): T. Someya, H. Fukidome, H. Watanabe, T. Yamamoto, M. Okada, H. Suzuki, Y. Ogawa, T. Iimori, N. Ishii, T. Kanai, K. Tashima, B. Feng, S. Yamamoto, J. Itatani, F. Komori, K. Okazaki, S. Shin and I. Matsuda, Phys. Rev. B 95 (2017) 165303(1-7).
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Direct mapping of spin and orbital entangled wave functions under interband spin-orbit coupling of giant Rashba spin-split surface states: R. Noguchi, K. Kuroda, K. Yaji, K. Kobayashi, M. Sakano, A. Harasawa, T. Kondo, F. Komori and S. Shin, Phys. Rev. B 95 (2017) 041111(R) (1-6).
