原著論文
E. Sakai, Naoya Tsutsumi, Koji Horiba, Hiroshi Kumigashira, and Yoshiko Tsuji
"Transport properties and electronic structure of fluorine-doped SnO2 prepared by ultrasonic assisted mist deposition"
J. Electron Spectrosc. Relat. Phenom. 247, 147041 (2021).
E. Sakai, C. Kurosawa, and Y. Tsuji,
"The real-time analysis of oxygen concentrations in an enclosed space during the evaporation of a liquid nitrogen",
Journal of Environment and Safety 11, 27-30 (2020).
M. Kitamura, M. Kobayashi, E. Sakail, M. Minohara, R. Yukawa, D. Shiga, K. Amemiya, Y. Nonaka, G. Shibata, A. Fujimori, H. Fujioka, K. Horiba, and H. Kumigashira,
"Relationship between charge redistribution and ferromagnetism at the heterointerface between perovskite oxides LaNiO3 and LaMnO3"
Phys. Rev. B 100, 245132 (2019).
M. Anada, K. Kowa, H. Maeda, E. Sakai, M. Kitamura, H. Kumigashira, O. Sakata, Y. Nakanishi-Ohno, M. Okada, T. Kimura, and Y. Wakabayashi,
"Spatial coherence of the insulating phase in quasi-two-dimensional LaNiO3 films"
Phys. Rev. B 98, 014105 (2018).
M. Okuya, J. Sato, T. Endo, R. Iwaki, S. Takemura, R. Muramoto, V. Nagygyörgy, J. Madarász, S. Nakao, N. Yamada, E. Sakai, T. Hitosugi, and T. Hasegawa,
"TiO2 /TNO homojunction introduced in a dye-sensitized solar cell with a novel TNO transparent conductive oxide film"
J. Am. Ceram. Soc. 101 5071 (2018).
M. Kobayashi, K. Yoshimatsu, T. Mitsuhashi, M. Kitamura, E. Sakai, R. Yukawa, M. Minohara, A. Fujimori, K. Horiba, and H. Kumigashira
"Emergence of Quantum Critical Behavior in Metallic Quantum-Well States of Strongly Correlated Oxides"
E. Sakai, N. Nagamura, J. Liu, T. Hisatomi, T. Yamada, K. Domen and M. Oshima,
"Investigation of the enhanced photocathodic activity of La5Ti2CuS5O7 photocathodes in H2 evolution by synchrotron radiation nanospectroscopy."
Nanoscale 8, 18893-18896 (2016).
T. Suetsugu, Y. Shimazu, T. Tsuchiya, M. Kobayashi, M. Minohara, E. Sakai, K. Horiba, H. Kumigashira, and T. Higuchi,
"Metal-Insulator Transition of Valence-Controlled VO2 Thin Film Prepared by RF Magnetron Sputtering Using Oxygen Radical"
Jpn. J. Appl. Phys. 55, 06GJ11 (2016).
M. Kitamura, K. Horiba, M. Kobayashi, E. Sakai, M. Minohara, T. Mitsuhashi, A. Fujimori, T. Nagai, H. Fujioka, and H. Kumigashira,
“Spatial distribution of transferred charges across the heterointerface between perovskite transition metal oxides LaNiO3 and LaMnO3”
Appl. Phys. Lett. 108, 111603 (2016).
K. Horiba, M. Kitamura, K. Yoshimatsu, M. Minohara, E. Sakai, M. Kobayashi, A. Fujimori, and H. Kumigashira,
“Isotropic Kink and Quasiparticle Excitations in the Three-Dimensional Perovskite Manganite La0.6Sr0.4MnO3”
Phys. Rev. Lett. 116, 076401 (2016).
H. Suzuki, G. Q. Zhao, K. Zhao, B. J. Chen, M. Horio, K. Koshishi, J. Xu, M. Kobayashi, M. Minohara, E. Sakai, K. Horiba, H. Kumigashira, B. Gu, S. Maekawa, Y. J. Uemura, C. Q. Jin, and A. Fujimori,
"Fermi Surfaces and p-d Hybridization in the Diluted Magnetic Semiconductor Ba1-xKx(Zn1-yMny)2As2 Studied by Soft X-ray Angle Resolved Photoemission Spectroscopy"
Phys.Rev. B 92, 235120 (2015).
M. Kobayashi, K. Yoshimatsu, E. Sakai, M. Kitamura, K. Horiba, A. Fujimori, and H. Kumigashira,
“Origin of the anomalous mass renormalization in metallic quantum well states of strongly correlated oxide SrVO3”
Phys. Rev. Lett. 115, 076801 (2015).
T. Suetsugu, Y. Shimazu, T. Tsuchiya, M. Kobayashi, E. Sakai, K. Horiba, H. Kumigashira, and T. Higuchi,
“Electronic structure for b-axis orientated of VO2 thin film with mixed-valent state by soft X-ray spectroscopy”
J. Phys. Soc. Jpn. 84, 064715 (2015).
M. Kitamura, M. Kobayashi, E. Sakai, R. Takahashi, M. Lippmaa, K. Horiba, H. Fujioka, and H. Kumigashira,
“Determination of band diagram for a p-n junction between Mott insulator LaMnO3 and band insulator Nb:SrTiO3”
Appl. Phys. Lett. 106, 061605 (2015).
K. Usui, S. Yamaguchi, N. Suzuki, Y. Shimazu, E. Sakai, M. Kobayashi, K. Horiba, H. Kumigashira, and T. Higuchi,
“Electronic Structure of Ti1-xFexO2-δ Thin Film with Oxygen Vacancies Probed by Soft-X-Ray Spectroscopy”
J. Jpn. Appl. Phys. 54, 06FJ04—1-5 (2015).
T. Higuchi, T. Owaku, Y. Iida, E. Sakai, M. Kobayashi, H. Kumigashira,
“Proton conduction of BaCe0.90Y0.10O3-d thin film with lattice distortion”
Solid StateIonics 270, 1-5 (2015).
H. Wadati, J. Okamoto, M. Garganourakis, V. Scagnoli, U. Staub, E. Sakai, H. Kumigashira, T. Sugiyama, E. Ikenaga, M. Nakamura, M. Kawasaki, and Y. Tokura,
“Orbital correlations and dimensional crossover in epitaxial Pr0.5Ca0.5MnO3/La0.5Sr0.5MnO3 superlattices”
New J. Phys. 16, 073044 (2014).
G. Shibata, K. Yoshimatsu, E. Sakai, V. R. Singh, V. K. Verma, K. Ishigami, T. Harano, T. Kadono, Y. Takeda, T. Okane, Y. Saitoh, H. Yamagami, A. Sawa, H. Kumigashira, M. Oshima, T. Koide, and A. Fujimori,
“Thickness-dependent ferromagnetic metal-to-paramagnetic insulator transition in La0.65Sr0.4MnO3 thin films studies by x-ray magnetic circular dichroism”
Phys. Rev. B 89, 235123 (2014).
T. Inoue, T. Okumura, Y. Shimazu, E. Sakai, H. Kumigashira and T. Higuchi,
“Electrical Conductivity of Sc-doped TiO2 Thin Film Prepared by RF Magnetron Sputtering”
Jpn. J. Appl. Phys. 53, 06JG03 (2014).
Y. Shimazu, T. Okumura, E. Sakai, H. Kumigasira, M. Okawa, T. Saitoh and T. Higuchi,
“Growth of TiO2-δ Thin Film by RF Magnetron Sputtering Using Oxygen Radical and Ti-Metal”
Jpn. J. Appl. Phys. 53, 06JG01 (2014).
Y. Shimazu, T. Okumura, A. Shimada, K. Tanabe, K. Tokiwa, E. Sakai, H. Kumigasira and T. Higuchi,
“Electronic Structure of V2O3 Thin Film Prepared by RF Magnetron Sputtering using Oxygen Radical and V-Metal”
Jpn. J. Appl. Phys. 53, 06JG05 (2014).
E. Sakai, K. Yoshimatsu, M. Tamamitsu, K. Horiba, A. Fujimori, M. Oshima, and H. Kumigashira
“Bandwidth-controlled metal-insulator transition in epitaxial PrNiO3 ultrathin films induced by dimensional crossover”
Appl. Phys. Lett. 104, 171609 (2014).
S. Toyoda, T. Namiki, E. Sakai, K. Nakata, M. Oshma, and H. Kumigashira,
“Chemical-state-resolved depth profiles of Al/Pr0.7Ca0.3MnO3”
J. Appl. Phys. 114, 243711 (2013).
K. Yoshimatsu, H. Wadati, E. Sakai, T. Harada, Y. Takahashi, G. Shibata, K. Ishigami, T. Kadono, T. Koide, T. Sugiyama, E. Ikenaga, H. Kumigashira, M. Lippmaa, M. Oshima, and A. Fujimori,
“Spectroscopic studies on the electronic and magnetic states of Co-doped perovskite manganite Pr0.8Ca0.2Mn1-yCoyO3 thin films”
Phys. Rev. B 88, 174423 (2013).
K. Yoshimatsu, E. Sakai, M. Kobayashi, K. Horiba, T. Yoshida, A. Fujimori, M. Oshima, and H. Kumigashira,
“Determination of the surface and interface phase shifts in metallic quantum well structures of perovskite oxides”
Phys. Rev. B 88,115308 (2013).
K. Nogami, K. Yoshimatsu, H. Mashiko, E. Sakai, H. Kumigashira, O. Sakata, T. Oshima, and A. Ohtomo,
“Epitaxial synthesis and electronic properties of double-perovskite Sr2TiRuO6 films”
Appl. Phys. Express 6, 105502 (2013).
H. Suzuki, T. Yoshida, S. Ideta, G. Shibata, K. Ishigami, T. Kadono, A. Fujimori, M. Hashimoto, D. H. Lu, Z. –X. Shen, K. Ono E. Sakai, H. Kumigashira, M. Matsuno, and T. Sasagawa,
“Absence of superconductivity in the hole-doped Fe pnictide Ba(Fe1-xMnx)2As2: Photoemission and x-ray absorption spectroscopy studies”
Phys. Rev. B 88,100501(R) (2013).
T. Yokobori, M. Okawa, K. Konishi, R. Takei, K. Katayama, S. Oozono, T. Shinmura, T. Okuda, H. Wadati, E. Sakai, K. Ono, H. Kumigashira, M. Oshima, T. Sugiyama, E. Ikenaga, N. Hamada, and T. Saitoh,
“Electronic structure of hole-doped delafossite oxides CuCr1-xMgxO2”
Phys. Rev. B 87, 195124 (2013).
E. Sakai, M. Tamamitsu, K. Yoshimatsu, S. Okamoto, K. Horiba, M. Oshima, and H. Kumigashira
“Gradual localization of Ni 3d states in LaNiO3 ultrathin films induced by dimensional crossover”
Phys. Rev. B 87, 075132 (2013).
E. Sakai, K. Amemiya, A. Chikamatsu, Y. Hirose, T. Shimada, and T. Hasegawa,
“X-ray absorption and magnetic circular dichroism characterization of Fe-doped TiO2-d thin films”
T. Okumura, T. Inoue, Y. Tasaki, E. Sakai, H. Kumigashira, and T. Higuchi,
“Electronic Structure of SrTi0.99Sc0.01O3 Thin Film by High-Resolution Soft-X-Ray Spectroscopy”
J. Phys. Soc. Jpn. 81, 094705 (2012).
E. Sakai, K. Yoshimatsu, K. Shibuya, H. Kumigashira, E. Ikenaga, M. Kawasaki, Y. Tokura, and M. Oshima,
“Competition between instabilities of Peierls transition and Mott transition in W-doped VO2 thin films”
Phys. Rev. B 84, 195132 (2011).
J. Ohkubo, Y. Hirose, E. Sakai, S. Nakao, T. Hitosugi, and T. Hasegawa,
“Wet Etching of TiO2-Based Precursor Amorphous Films for Transparent Electrodes”
Jpn. J. Appl. Phys. 50,018002 (2011).
E. Sakai, A. Chikamatsu, Y. Hirose, T. Shimada, and T. Hasegawa,
“Transport and magnetic properties of anatase TiO2 codoped with Fe and Nb”
Appl. Phys. Express 3,043001 (2010).
J. Miyawaki, D. Matsumura, H. Abe, T. Ohtsuki, E. Sakai, K. Amemiya, and T. Ohta,
“Perpendicular magnetic anisotropy associated with strain relaxation in Ru/Co/Ru(0001): Anomalous relation of atomic and magnetic structures”
Phys. Rev. B 80, 020408(R) (2009).
H. Abe, K. Amemiya, D. Matsumura, J. Miyawaki, E. O. Sako, T. Ohtsuki, E. Sakai, and T. Ohta
“Anomalous magnetic phases in Fe/Cu(001) ultrathin films induced by CO adsorption”
Phys.Rev. B, 77 054409 (2008).
K. Amemiya, E. Sakai, D. Matsumura, H. Abe, and T. Ohta,
“Anomalous behavior of satellite features at the surface and interface in the Ni L-edge x-ray absorption spectra”
Phys. Rev. B 72, 201404(R) (2005).
K. Amemiya, E. Sakai, D. Matsumura, H. Abe, T. Ohta, and T. Yokoyama
“Spin-reorientation transition of Ni/Cu (100) and CO/Ni/Cu (100): Separation of the surface and bulk components of the X-ray magnetic circular dichroism spectrum”
Phys. Rev. B, 71, 214420 (2005).
学会抄録
Rie Naito, Yuta Nakano, Mario Okawa, Hiroki Wadati, Ryouta Nakamura, Jun-ichiro Tozawa, Mitsuru Akaki, Hideki Kuwahara, Takeharu Sugiyama, Eiji Ikenaga, Hiroshi Kumigashira, Enju Sakai, and Tomohiko Saitoh,
"Electronic Structure of Sr3Fe2−xCoxO7−δ Studied by Photoemission and X-ray Absorption Spectroscopy",
Proceedings of the International Conference on Strongly Correlated Electron Systems (SCES2019), 011073 (2020).
G. Shibata, K. Yoshimatsu, E. Sakai, K. Ishigami, S. Sakamoto, Y. Nonaka, F-H. Chang, Hong-Ji Lin, D-J. Huang, C-T. Chen, H. Kumigashira, and A. Fujimori,
“Evolution of magnetic phases near the thickness-dependent metal-insulator transition in La1-xSrxMnO3 thin films observed by XMCD”
JPS Conf. Proc. 30, 011072 (2020).
Y. Wakabayashi, H. Maeda, T. Kimura, O. Sakata, E. Sakai, and H. Kumigashira,
“Microscopic Observation of Degradation of LaNiO3 Ultrathin Films Caused by Air Exposure”
e-Journal of Surface Science and Nanotechnology 14,14 (2016).
K. Usui, T. Okumura, E. Sakai, H. Kumigashira, and T. Higuchi,
“Structural and electronic properties of anatase Ti1−xFexO2−δ thin film prepared by RF magnetron sputtering”
J. Phys.: Conf. Ser. 502, 012001 (2014).
M. Okawa, T. Yokobori, K. Konishi, R. Takei, K. Katayama, S. Oozono, T. Shinmura, T. Okuda, H. Wadati, E. Sakai, K. Ono, H. Kumigashira, M. Oshima, T. Sugiyama, E. Ikenaga, N. Hamada, and T. Saitoh,
"Cu–O–Cr Hybridization Effects on the Electronic Structure of a Hole-Doped Delafossite Oxide CuCr1−xMgxO2"
JPS Conf. Proc. 3, 017027 (2014).
T. Maruyama, T. Ohtsuki, E. Sakai, H. Abe, T. Shimada, T. Hasegawa, S-I. Nagamatsu, and T. Fujikawa,
“Multiple-scattering approach to Ti L2,3-edge XMCD analyses for Co doped TiO2”
J. Phys.: Conf. Ser. 190 012018 (2009).
H. Abe, K. Amemiya, J. Miyawaki, E. O. Sako, M. Sakamaki, D. Matsumura, T. Ohtsuki, E. Sakai and T. Ohta
"CO Adsorption Effects on the Magnetism and Surface Structure of Fe/Cu(001)"
e-Journal of Surface Science and Nanotechnology, 6, 233 (2008).
H.Abe, K.Amemiya, D.Matsumura, T.Ohtsuki, E.Sakai, T.Yokoyama, and T.Ohta,
"Depth-resolved XMCD application to Fe/Ni/Cu(001) films"
AIP Conf. Proc. 882, 384 (2007).
J.Miyawaki, D.Matsumura, H.Abe, T.Otsuki, E.Sakai, K.Amemiya, and T.Ohta,
"Spin Reorientation Transition in Ultrathin Co Films on Ru(0001) Induced by Ru Capping ",
AIP Conf. Proc. 882, 505 (2007).