Yasuo TAKEICHI

J-GLOBAL         Last updated: Oct 7, 2019 at 13:30
 
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Name
Yasuo TAKEICHI
Affiliation
Institute of Materials Structure Science

Academic & Professional Experience

 
Apr 2014
 - 
Today
Assistant professor, Institute of Materials Structure Science, High Energy Accelerator Research Organization
 
Apr 2012
 - 
Mar 2014
Postdoctoral fellow, Institute of Materials Structure Science, High Energy Accelerator Research Organization
 

Education

 
 
 - 
Mar 2012
Department of Physics, Graduate School of Science, The University of Tokyo
 

Published Papers

 
Alexandre L. Foggiatto, Yasuo Takeichi, Kanta Ono, Hiroki Suga, Yoshio Takahashi, Michael A. Fusella, Jordan T. Dull, Barry P. Rand, Kentaro Kutsukake, Takeaki Sakurai
Organic Electronics   74 315-320   Nov 2019   [Refereed]
Abe H, Niwa Y, Takeichi Y, Kimura M.
Chemical Record   19(7) 1457-1461   2019   [Refereed]
Foggiatto A.L, Suga H, Takeichi Y, Ono K, Takahashi Y, Kutsukake K, Ueba T, Kera S, Sakurai T.
Japanese Journal of Applied Physics   58(SB)    2019   [Refereed]
Chan Q.H.S, Nakato A, Kebukawa Y, Zolensky M.E, Nakamura T, Maisano J.A, Colbert M.W, Martinez J.E, Kilcoyne A.L.D, Suga H, Takahashi Y, Takeichi Y, Mase K, Wright I.P.
Meteoritics and Planetary Science   54(1) 104-125   2019   [Refereed]
Niwa Y, Takeichi Y, Watanabe T, Kimura M.
AIP Conference Proceedings   2054    2019   [Refereed]
Kimura M, Takeichi Y, Watanabe T, Niwa Y, Kimijima K.
Chemical Record   19(7) 1462-1468   2019   [Refereed]
Kebukawa Y, Ito M, Zolensky M.E, Greenwood R.C, Rahman Z, Suga H, Nakato A, Chan Q.H.S, Fries M, Takeichi Y, Takahashi Y, Mase K, Kobayashi K.
Scientific Reports   9(1)    2019   [Refereed]
Uramoto G.-I, Morono Y, Tomioka N, Wakaki S, Nakada R, Wagai R, Uesugi K, Takeuchi A, Hoshino M, Suzuki Y, Shiraishi F, Mitsunobu S, Suga H, Takeichi Y, Takahashi Y, Inagaki F.
Nature Communications   10(1)    2019   [Refereed]
Yasuo Takeichi, Toshiki Watanabe, Yasuhiro Niwa, Satoshi Kitaoka and Masao Kimura
Microscopy and Microanalysis   24 (Suppl 2) 484-485   Aug 2018   [Refereed]
Chan Q.H.S, Zolensky M.E, Kebukawa Y, Fries M, Ito M, Steele A, Rahman Z, Nakato A, David Kilcoyne A.L, Suga H, Takahashi Y, Takeichi Y, Mase K.
Science Advances   4(1)    2018   [Refereed]
Ueno T, Hino H, Hashimoto A, Takeichi Y, Sawada M, Ono K.
npj Computational Materials   4(1)    2018   [Refereed]
Kimura M, Obayashi I, Takeichi Y, Murao R, Hiraoka Y.
Scientific Reports   8(1)    2018   [Refereed]
Kimura M, Takeichi Y, Niwa Y, Watanabe T.
33rd Technical Conference of the American Society for Composites 2018   3 1744-1749   2018   [Refereed]
Watanabe T, Takeichi Y, Niwa Y, Kimura M.
33rd Technical Conference of the American Society for Composites 2018   3 1738-1743   2018   [Refereed]
Qin H.-B, Takeichi Y, Nitani H, Terada Y, Takahashi Y.
Environmental Science and Technology   51(11) 6027-6035   2017   [Refereed]
Ueno T, Hashimoto A, Takeichi Y, Ono K.
AIP Advances   7(5)    2017   [Refereed]
Harano T, Murao R, Takeichi Y, Kimura M, Takahashi Y.
Journal of Physics: Conference Series   849(1)    2017   [Refereed]
Suga H, Kikuchi S, Takeichi Y, Miyamoto C, Miyahara M, Mitsunobu S, Ohigashi T, Mase K, Ono K, Takahashi Y.
Microbes and Environments   32(3) 283-287   2017   [Refereed]
Kimura M, Takeichi Y, Murao R, Obayashi I, Hiraoka Y, Liu Y.
Journal of Physics: Conference Series   849(1)    2017   [Refereed]
Harano T, Murao R, Takeichi Y, Kimura M, Takahashi Y.
Journal of Physics: Conference Series   849(1)    2017   [Refereed]
Takahashi Y, Fan Q, Suga H, Tanaka K, Sakaguchi A, Takeichi Y, Ono K, Mase K, Kato K, Kanivets V.V.
Scientific Reports   7(1)    2017   [Refereed]
Wakabayashi D, Funamori N, Kikegawa T, Watanabe K, Kohara S, Nitani H, Niwa Y, Takeichi Y, Abe H, Kimura M.
Physical Review B   96(2)    2017   [Refereed]
Yasuo Takeichi, Tetsuro Ueno, Nobuhito Inami, Hiroki Suga, Yoshio Takahashi, Kanta Ono
AIP Conference Proceedings   1741    Jul 2016   [Refereed]
© 2016 Author(s).We report the stability and recent performances of a new type of scanning transmission X-ray microscopy. The optics and compact design of the microscope realized mobility and robust performance. Detailed consideration to the vibra...
Noriyuki Igarashi, Hiroaki Nitani, Yasuo Takeichi, Yasuhiro Niwa, Hitoshi Abe, Masao Kimura, Takeharu Mori, Yasuko Nagatani, Takashi Kosuge, Ai Kamijo, Atsushi Koyama, Hiromasa Ohta, Nobutaka Shimizu
AIP Conference Proceedings   1741    Jul 2016   [Refereed]
© 2016 Author(s).BL-15A is a new x-ray undulator beamline at the Photon Factory. It will be dedicated to two independent research activities, simultaneous XAFS/XRF/XRD experiments, and SAXS/WAXS/GI-SAXS studies. In order to supply a choice of micr...
Annese E, Kuzumaki T, Müller B, Yamamoto Y, Nakano H, Kato H, Araki A, Ohtaka M, Aoki T, Ishikawa H, Hayashida T, Osiecki JR, Miyamoto K, Takeichi Y, Harasawa A, Yaji K, Shirasawa T, Nittoh K, Yang W, Miki K, Oda T, Yeom HW, Sakamoto K
Physical review letters   117(1) 016803   Jul 2016   [Refereed]
Yaji K, Kim S, Mochizuki I, Takeichi Y, Ohtsubo Y, Le Fèvre P, Bertran F, Taleb-Ibrahimi A, Shin S, Komori F
Journal of physics. Condensed matter : an Institute of Physics journal   28(28) 284001   Jul 2016   [Refereed]
Yasuo Takeichi, Nobuhito Inami, Hiroki Suga, Yoshio Takahashi, Yoshio Takahashi, Kanta Ono
AIP Conference Proceedings   1696    Jan 2016   [Refereed]
© 2016 AIP Publishing LLC.We report the design and performance of a compact scanning transmission X-ray microscope developed at the Photon Factory. Piezo-driven linear stages are used as coarse stages of the microscope to realize excellent compact...
M. Kimura, M. Kimura, M. Kimura, R. Murao, N. Ohta, K. Noami, Y. Uemura, Y. Niwa, K. Kimijima, Y. Takeichi, Y. Takeichi, H. Nitani, H. Nitani
Journal of Physics: Conference Series   712(1)    Jan 2016   [Refereed]
Iron-ore sinters constitute the major component of the iron-bearing burden in blast furnaces, and the mechanism of their reduction is one of the key processes in iron making. The heterogeneous reduction of sintered oxides was investigated by the c...
Y. Takeichi, Y. Takeichi, N. Inami, H. Suga, C. Miyamoto, T. Ueno, K. Mase, K. Mase, Y. Takahashi, Y. Takahashi, Y. Takahashi, K. Ono, K. Ono
Review of Scientific Instruments   87(1) 013704   Jan 2016   [Refereed]
© 2016 AIP Publishing LLC.We present a new compact instrument designed for scanning transmission X-ray microscopy. It has piezo-driven linear stages, making it small and light. Optical components from the virtual source point to the detector are l...
Mitsunobu S, Zhu M, Takeichi Y, Ohigashi T, Suga H, Jinno M, Makita H, Sakata M, Ono K, Mase K, Takahashi Y
Microbes and environments   31(1) 63-69   2016   [Refereed]
Yutaka Moritomo, Kouhei Yonezawa, Takeaki Sakurai, Takeaki Sakurai, Takeshi Yasuda, Yasuo Takeichi, Hayato Kamioka, Hiroki Suga, Yoshio Takahashi, Yuji Yoshida, Nobuhito Inami, Kazuhiko Mase, Kanta Ono
Molecular Crystals and Liquid Crystals   620(1) 32-37   Oct 2015   [Refereed]
Copyright © Taylor & Francis Group, LLC.Clarification of the morphology of bulk heterojunction (BHJ) is indispensable for true comprehension of the organic solar cells. Here, we performed scanning transmission X-ray microscopy (STXM) for a poly-(9...
Ueno T, Sinha J, Inami N, Takeichi Y, Mitani S, Ono K, Hayashi M
Scientific reports   5 14858   Oct 2015   [Refereed]
Kazuyuki Sakamoto, Tatsuki Oda, Akio Kimura, Yasuo Takeichi, Jun Fujii, R. I G Uhrberg, Markus Donath, Han Woong Yeom
Journal of Electron Spectroscopy and Related Phenomena   201 88-91   May 2015   [Refereed]
© 2014 Elsevier B.V. All rights reserved.The geometric symmetry of the surface plays an important role for the spin-orbit-induced spin texture of two-dimensional electronic states. This article reviews the peculiar Rashba spins induced by a C<inf>...
Moritomo Y, Yasuda T, Yonezawa K, Sakurai T, Takeichi Y, Suga H, Takahashi Y, Inami N, Mase K, Ono K
Scientific reports   5 9483   Mar 2015   [Refereed]
Satoshi Mitsunobu, Ming Zhu, Yasuo Takeichi, Yasuo Takeichi, Takuji Ohigashi, Hiroki Suga, Hiroko Makita, Masahiro Sakata, Kanta Ono, Kanta Ono, Kazuhiko Mase, Kazuhiko Mase, Yoshio Takahashi, Yoshio Takahashi
Chemistry Letters   44(1) 91-93   Jan 2015   [Refereed]
© 2015 The Chemical Society of Japan.In the present study, we applied a scanning transmission X-ray microscopy (STXM) technique to investigate the spatial distribution of biomolecules at the microbe-mineral boundary during bioleaching process of p...
Kotaro Saito, Nobuhito Inami, Yasuo Takeichi, Tetsuro Ueno, Ryoko Sagayama, Reiji Kumai, Thomas Hansen, Kanta Ono
Acta Crystallogr Sect A Found Crystallogr   70(a1) C1460   Aug 2014   [Refereed]
Nobuhito Inami, Yasuo Takeichi, Tetsuro Ueno, Kotaro Saito, Ryoko Sagayama, Reiji Kumai, Kanta Ono
Journal of Applied Physics   115(17) 17A712   May 2014   [Refereed]
We performed single crystal structure analysis of Sm2Fe 17N3 using X-ray diffraction. A pick-up system combined with a micromanipulation tool driven by piezoelectric actuators and a microgripper was used. A single Sm2Fe17Nx particle with the diame...
Yutaka Moritomo, Takeaki Sakurai, Takeshi Yasuda, Yasuo Takeichi, Kouhei Yonezawa, Hayato Kamioka, Hiroki Suga, Yoshio Takahashi, Yuji Yoshida, Nobuhito Inami, Kazuhiko Mase, Kanta Ono
Appl. Phys. Express   7(5) 052302   Apr 2014   [Refereed]
Yasuo Takeichi, Nobuhito Inami, Hiroki Suga, Kanta Ono, Yoshio Takahashi
Chemistry Letters   43(3) 373-375   Mar 2014   [Refereed]
We report a compact scanning transmission X-ray microscope (STXM) newly designed and developed at the Photon Factory. Piezo-driven linear stages are used for all of the coarse stages in the microscope to make the microscope compact, stable, and su...
N. Inami, Y. Takeichi, K. Ono
Journal of Physics: Conference Series   502(1)    Jan 2014   [Refereed]
We developed a real-time motion control and measurement system for a scanning transmission X-ray microscope. The system was designed with an FPGA (field-programmable gate array), which is a programmable, reconfigurable circuit for real-time featur...
Y. Takeichi, N. Inami, T. Ueno, K. Saito, H. Otori, R. Sagayama, R. Kumai, K. Ono
Journal of Physics: Conference Series   502(1)    Jan 2014   [Refereed]
We describe a micromanipulation and pick-up system for preparing a micrometer-sized single particle for X-ray diffraction characterization. Combining a microgripper based on microelectromechanical systems, piezo-motor-driven linear stages, and a g...
S. Itoh, S. Itoh, T. Yokoo, T. Yokoo, D. Kawana, Y. Kaneko, Y. Tokura, Y. Tokura, M. Fujita, K. Yoshida, K. Saito, K. Saito, N. Inami, N. Inami, Y. Takeichi, Y. Takeichi, K. Ono, K. Ono, Y. Endoh, Y. Endoh, Y. Endoh
Journal of Physics: Conference Series   502(1)    Jan 2014   [Refereed]
We improved the High Resolution Chopper Spectrometer (HRC), which is installed at MLF in J-PARC, in order to perform neutron Brillouin scattering (NBS) experiments, and successfully demonstrated a feasibility of this method. Gapless spin-wave exci...
Y. Takeichi, N. Inami, H. Suga, T. Ueno, S. Kishimoto, Y. Takahashi, K. Ono
Journal of Physics: Conference Series   502(1)    Jan 2014   [Refereed]
We report a compact scanning transmission X-ray microscope newly designed and developed at the Photon Factory. The microscope has very compact size and is equipped with fully digitized control electronics to realize high stability, precise positio...
Hiroyuki Ohtori, Kaoru Iwano, Chiharu Mitsumata, Yasuo Takeichi, Masao Yano, Akira Kato, Noritaka Miyamoto, Tetsuya Shoji, Akira Manabe, Kanta Ono
Journal of Physics: Conference Series   502(1) 012010   Jan 2014   [Refereed]
Using scanning transmission X-ray microscopy (STXM), in this report we visualized the magnetic dipolar interactions in nanocrystalline Nd-Fe-B magnets and imaged their magnetization distributions at various applied fields. We calculated the magnet...
Nobuhito Inami, Yasuo Takeichi, Chiharu Mitsumata, Kaoru Iwano, Tadashi Ishikawa, S. J. Lee, Hideto Yanagihara, Eiji Kita, Kanta Ono
IEEE Transactions on Magnetics   50(1)    Jan 2014   [Refereed]
We have successfully performed a large-scale micromagnetics simulation for more than 100 million cells with long-range dipolar interaction using the fast Fourier transform method. The recent demand for a coercivity mechanism in permanent magnets r...
Hiroki Suga, Qiaohui Fan, Yasuo Takeichi, Kazuya Tanaka, Hiroaki Kondo, Vladimir V. Kanivets, Aya Sakaguchi, Kenji Kato, Nobuhito Inami, Kazuhiko Mase, Kanta Ono, Yoshio Takahashi, Yoshio Takahashi
Chemistry Letters   43(7) 1128-1130   Jan 2014   [Refereed]
Although cesium adsorbs onto the interlayer of clay minerals, coexisting natural organic matter (NOM) can inhibit this adsorption because of their blocking effect. A large amount of dissolved organic carbon (DOC) in the Pripyat River (= 18 mg L-1)...
K. Yaji, I. Mochizuki, S. Kim, Y. Takeichi, A. Harasawa, Y. Ohtsubo, P. Le Fèvre, F. Bertran, A. Taleb-Ibrahimi, A. Taleb-Ibrahimi, A. Kakizaki, F. Komori
Physical Review B - Condensed Matter and Materials Physics   87(24)    Jun 2013   [Refereed]
We have investigated the electronic band structure of Pt-induced nanowires on Ge(001) [Pt/Ge(001) NWs] by angle-resolved photoelectron spectroscopy at 6 K. Single-domain samples of Pt/Ge(001) NWs were prepared on vicinal Ge(001) substrates. One of...
Sakamoto K, Kim TH, Kuzumaki T, Müller B, Yamamoto Y, Ohtaka M, Osiecki JR, Miyamoto K, Takeichi Y, Harasawa A, Stolwijk SD, Schmidt AB, Fujii J, Uhrberg RI, Donath M, Yeom HW, Oda T
Nature communications   4 2073   Jun 2013   [Refereed]
Yoshiyuki Ohtsubo, Yoshiyuki Ohtsubo, Shinichiro Hatta, Shinichiro Hatta, Nobuhiko Kawai, Akinobu Mori, Yasuo Takeichi, Koichiro Yaji, Koichiro Yaji, Hiroshi Okuyama, Tetsuya Aruga, Tetsuya Aruga
Physical Review B - Condensed Matter and Materials Physics   86(16)    Oct 2012   [Refereed]
We have investigated the atomic and electronic structure of the Br/Ge(111)-(1×1) surface. A couple of surface bands were found near the bulk valence band maximum by angle-resolved photoelectron spectroscopy (ARPES). Spin-resolved ARPES (SARPES) ex...
Fan Yong Ran, Yasushi Tsunemaru, Takahide Hasegawa, Yasuo Takeichi, Ayumi Harasawa, Koichiro Yaji, Sunghun Kim, Akito Kakizaki
Journal of Physics D: Applied Physics   45(27) 275002   Jul 2012   [Refereed]
The valence band structure of well-ordered Fe 3O 4(001) films was investigated in situ by angle-resolved photoemission spectroscopy (ARPES) at room temperature (RT) and 90K. A band gap of about 70meV below the Fermi level (E F) can be observed at ...
Fumitaka Nakamura, Yuka Kousa, Alexey A. Taskin, Yasuo Takeichi, Akinori Nishide, Akito Kakizaki, Marie D'Angelo, Patrick Lefevre, Francois Bertran, Amina Taleb-Ibrahimi, Fumio Komori, Shin Ichi Kimura, Hiroshi Kondo, Yoichi Ando, Iwao Matsuda
Physical Review B - Condensed Matter and Materials Physics   84(23)    Dec 2011   [Refereed]
Spin- and angle-resolved photoemission spectroscopy measurements were performed on Bi 1-xSb x samples at x=0.04, 0.07, and 0.21 to study the change of the surface band structure from nontopological to topological. Energy shift of the T and L s bul...
F. Y. Ran, Y. Tsunemaru, T. Hasegawa, Y. Takeichi, A. Harasawa, K. Yaji, S. Kim, A. Kakizaki
Journal of Applied Physics   109(12)    Jun 2011   [Refereed]
Structural and magnetic properties, and the valence band structure of pure and Co-doped (up to 33) Fe3O4(100) films were investigated. Reconstruction of the Fe3O4(100) surface is found to be blocked by Co doping. Doped Co ions in Fe3O4 are in a ch...
Taichi Okuda, Koji Miyamaoto, Yasuo Takeichi, Hirokazu Miyahara, Manami Ogawa, Ayumi Harasawa, Akio Kimura, Iwao Matsuda, Akito Kakizaki, Tatsuya Shishidou, Tatsuya Shishidou, Tamio Oguchi, Tamio Oguchi
Physical Review B - Condensed Matter and Materials Physics   82(16)    Oct 2010   [Refereed]
We report evidence of a spin-split one-dimensional metallic surface state for the system of Si(557)-Au obtained by means of spin- and angle-resolved photoelectron spectroscopy. Strikingly, considerably large out-of-plane spin polarization which is...
Toru Hirahara, Yusuke Sakamoto, Yasuo Takeichi, Hidetoshi Miyazaki, Shin Ichi Kimura, Iwao Matsuda, Akito Kakizaki, Shuji Hasegawa
Physical Review B - Condensed Matter and Materials Physics   82(15)    Oct 2010   [Refereed]
We have performed in situ spin- and angle-resolved photoemission and ex situ magnetotransport measurements on ultrathin topological insulator Bi 2 Se3 films. The surface states deviate from a simple isotropic Dirac fermion due to hexagonal warping...
Akinori Nishide, Alexey A. Taskin, Yasuo Takeichi, Taichi Okuda, Akito Kakizaki, Toru Hirahara, Kan Nakatsuji, Fumio Komori, Yoichi Ando, Iwao Matsuda
Physical Review B - Condensed Matter and Materials Physics   82(3)    Jul 2010   [Refereed]
Akinori Nishide, Yasuo Takeichi, Taichi Okuda, Alexey A. Taskin, Toru Hirahara, Kan Nakatsuji, Fumio Komori, Akito Kakizaki, Yoichi Ando, Yoichi Ando, Iwao Matsuda
New Journal of Physics   12(6) 065011   Jun 2010   [Refereed]
The spin-polarized surface band structure of the three-dimensional (3D) quantum spin Hall phase of Bi1-x Sbx (x = 0.12-0.13) was studied by spinand angle-resolved photoemission spectroscopy (SARPES) using a high-yield spin Polarimeter equipped wit...
He K, Takeichi Y, Ogawa M, Okuda T, Moras P, Topwal D, Harasawa A, Hirahara T, Carbone C, Kakizaki A, Matsuda I
Physical review letters   104(15) 156805   Apr 2010   [Refereed]
Akinori Nishide, Alexey A. Taskin, Yasuo Takeichi, Taichi Okuda, Akito Kakizaki, Toru Hirahara, Kan Nakatsuji, Fumio Komori, Yoichi Ando, Iwao Matsuda
Physical Review B - Condensed Matter and Materials Physics   81(4)    Jan 2010   [Refereed]
Spin-polarized band structure of the three-dimensional quantum spin Hall insulator Bi1-x Sbx (x=0.12-0.13) was fully elucidated by spin-polarized angle-resolved photoemission spectroscopy using a high-yield spin polarimeter equipped with a high-re...
Yasuo TAKEICHI, Ke HE, Taichi OKUDA, Toru HIRAHARA, Akito KAKIZAKI, Iwao MATSUDA
Hyomen Kagaku   31(9) 493   2010   [Refereed]
Taichi Okuda, Taichi Okuda, Yasuo Takeichi, Ke He, Ayumi Harasawa, Akito Kakizaki, Iwao Matsuda
Physical Review B - Condensed Matter and Materials Physics   80(11)    Sep 2009   [Refereed]
Anisotropic quantum well states (QWS) of Ag(111) film fabricated on various one-dimensional superstructures on Si(111) substrate are systematically studied by angle-resolved photoelectron spectroscopy. It is found that Ag(111) epitaxial films can ...
T. Okuda, Y. Takeichi, A. Harasawa, I. Matsuda, T. Kinoshita, A. Kakizaki
European Physical Journal: Special Topics   169(1) 181-185   May 2009   [Refereed]
We have developed a new spin-polarized photoemission spectrometer combined a commercial hemispherical electron energy analyzer with an electron spin-polarimeter employing the very low energy electron diffraction (VLEED) at a Fe(001)p(1 × 1)-O surf...
Okuda T, Takeichi Y, Maeda Y, Harasawa A, Matsuda I, Kinoshita T, Kakizaki A
The Review of scientific instruments   79(12) 123117   Dec 2008   [Refereed]
Keiji Kura, Kohsuke Takano, Yasuo Takeichi, Ayumi Harasawa, Taichi Okuda, Iwao Matsuda, Akito Kakizaki
Journal of the Physical Society of Japan   77(2)    Feb 2008   [Refereed]
We studied the electronic structures of MnSi(100) single crystal by angle-resolved photoemission spectroscopy (ARPES). The observed ARPES spectra show a sharp peak near the Fermi level corresponding to the large density of Mn 3d states. The intens...

Misc

 
Compendium of Surface and Interface Analysis      Feb 2018   [Refereed]