東京大学物性研究所 極限コヒーレント光科学研究センター 軌道放射物性研究施設(ISSP-SOR) 原田研究室

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QSTとの共著論文がPHYSICAL REVIEW Bに掲載されました!

T. Nomura, Y. Harada, H. Niwa, K. Ishii, M. Ishikado, S. Shamoto, and I. Jarrige,
Phys. Rev. B., 94(2016) 035134.
Resonant inelastic x-ray scattering study of entangled spin-orbital excitations in superconducting PrFeAsO0.7


筑波大との共著論文がNanoscale Research Letters誌に掲載されました!

Hisao Kiuchi, Riku Shibuya, Takahiro Kondo, Junji Nakamura, Hideharu
Niwa, Jun Miyawaki, Maki Kawai, Masaharu Oshima and Yoshihisa Harada,
Nanoscale Res. Lett., 11(2016) 127.
Lewis basicity of nitrogen-doped graphite observed by CO2 chemisorption


産総研、京大との共著論文がChemistry of Materials誌に掲載されました!

Yusuke Nanba, Tatsumi Iwao, Benoit Mortemard de Boisse, Eiji Hosono, Daisuke Asakura, Hideharu Niwa, Hisao Kiuchi, Jun Miyawaki, Yoshihisa Harada, Masashi Okubo, Atsuo Yamada, Chem. Mater., 28 (2016) 1058.
Redox Potential Paradox in NaxMO2 for Sodium-Ion Battery Cathodes


筑波大との共著論文がPhysical Chemistry Chemical Physics誌に掲載されました!

Hisao Kiuchi, Takahiro Kondo, Masataka Sakurai, Donghui Guo, Junji Nakamura, Hideharu Niwa, Jun Miyawaki, Maki Kawai, Masaharu Oshima, and Yoshihisa Harada, Physical Chemistry Chemical Physics, 18 (2016) 458.
Characterization of nitrogen species incorporated into graphite using low energy nitrogen ion sputtering


EPFL、千葉大との共著論文がPhysical Review Letters誌に掲載されました!

S. Moser, S. Fatale, P. Krüger, H. Berger, P. Bugnon, A. Magrez, H. Niwa, J. Miyawaki, Y. Harada, and M. Grioni, Physical Review Letters,115 (2015) 096404.
Electron-phonon coupling in the bulk of anatase TiO2 measured by RIXS


東工大、中国科学院、上海第二工業大学、JASRIとの共著論文がLangmuir誌に掲載されました!
Jiajia WU,Da Zhang, Hideharu Niwa, Yoshihisa Harada, Masaharu Oshima, Hironori Ofuchi, Yuta Nabae, Takeyoshi Okajima, Takeo Ohsaka, Langmuir, 31 (2015) 5529.
Enhancement in Kinetics of the Oxygen Reduction Reaction on a Nitrogen-Doped Carbon Catalyst by Introduction of Iron via Electrochemical Methods

東工大との共著論文がNanoscale Research Letters誌に掲載されました!

Yusuke Hiraike, Makoto Saito, Hideharu Niwa, Masaki Kobayashi, Yoshihisa Harada, Masaharu Oshima, Jaehong Kim, Yuta Nabae and Masa-aki Kakimoto, Nanoscale Research Letters, 10 (2015) 179.
Active site formation mechanism of carbon-based oxygen reduction catalysts derived from a hyperbranched iron phthalocyanine polymer


筑波大、東北大、ジョンソンマッセイとの共著論文がJournal of the Physical Society of Japan誌に掲載されました!

K. Kurita, D. Sekiba, I. Harayama, K. Chito, Y. Harada, H. Kiuchi, M. Oshima, S. Takagi, M. Matsuo, R. Sato, K. Aoki, S. Orimo, J. Phys. Soc. Jpn. 84 (2015) 043201.
Multi-phonon excitations in Fe 2p RIXS on Mg2FeH6


名古屋大との共著論文がJournal of Chemical Theory and Computation誌に掲載されました!

Yoshifumi Noguchi, Miyabi Hiyama, Hidefumi Akiyama, Yoshihisa Harada, Nobuaki Koga, J. Chem. Theo. Comp. 11 (2015) 1668.
First-Principles Investigation of Strong Excitonic Effects in Oxygen 1s X-Ray Absorption Spectra


SLAC、ストックホルム大、スタンフォード大、ベルリン自由大、ポツダム大、DESY、MAX-lab、理研、CFELとの共著論文がJournal of Chemical Physics誌に掲載されました!

Jonas Sellberg, Trevor McQueen, Hartawan Laksmono, Simon Schreck, Martin Beye, Daniel DePonte, Brian O’Kennedy, Dennis Nordlund, Raymond Sierra, Daniel Schlesinger, Takashi Tokushima, Sebastian Eckert, Vegard Segtnan, Hirohito Ogasawara, Katharina Kubicek, Simone Techert, U. Bergmann, Georgi Dakovski, William Schlotter, Yoshihisa Harada, Iurii Zhovtobriukh, Michael Bogan, Philippe Wernet, Alexander Föhlisch, Lars Pettersson, and Anders Nilsson, Journal of Chemical Physics, 142 (2015) 044505.
X-ray Emission Spectroscopy of Bulk Liquid Water in “No-man’s Land““


産総研との共著論文がElectrochemistry Communications誌に掲載されました!

D. Asakura, E. Hosono, H. Niwa, H. Kiuchi, J. Miyawaki, Y. Nanba, M. Okubo, H. Matsuda, H.S. Zhou, M. Oshima, and Y. Harada, Electrochemistry Communications, 50 (2015) 93.
Operando soft x-ray emission spectroscopy of LiMn2O4 thin film involving Li-ion extraction/insertion reaction


産総研との共著論文がThe Journal of Physical Chemistry Letters誌に掲載されました!

Daisuke Asakura, Yusuke Nanba, Masashi Okubo, Yoshifumi Mizuno, Hideharu Niwa, Masaharu Oshima, Haoshen Zhou, Kozo Okada, and Yoshihisa Harada, The Journal of Physical Chemistry Letters, 5 (2014) 4008.
Distinguishing Between High- and Low-spin States for Divalent Mn in K2Mn[Mn(CN)6] by High Resolution Soft X-ray Emission Spectroscopy


ベルリン自由大、ポツダム大、ストックホルム大、SLAC、スタンフォード大、DESY、Max Planck、LCLS、ゲッティンゲン大との共著論文がPhysical Review Letters誌に掲載されました!

Simon Schreck, Martin Beye, Jonas A. Sellberg, Trevor McQueen?, Hartawan Laksmono, Brian Kennedy, Sebastian Eckert, Daniel Schlesinger, Dennis Nordlund, Hirohito Ogasawara, Raymond G. Sierra, Vegard H. Segtnan, Katharina Kubicek, William F. Schlotter, Georgi L. Dakovski, Stefan P. Moeller, Uwe Bergmann, Simone Techert, Lars G. M. Pettersson, Philippe Wernet, Michael J. Bogan, Yoshihisa Harada, Anders Nilsson, and Alexander Föhlisch, Physical Review Letters 113 (2014) 153002.
Reabsorption of soft x-ray emission at high x-ray free-electron laser fluences


兵庫県立大、JASRI、理研との共著論文がNuclear Instruments and Methods in Physics Research Section A誌に掲載されました!

I. Matsuda, A. Kuroda, J. Miyawaki, Y. Kosegawa, S. Yamamoto, T. Seike, T. Bizen, Y. Harada, T. Tanaka, and H. Kitamura, Nuclear Instruments and Methods in Physics Research Section A  767  (2014) 296.
Development of an electromagnetic phase shifter using a pair of cut-core coils for a cross undulator


原研との共著論文がApplied Physics Letters誌に掲載されました!

M. Kobayashi, L. D. Anh, P. N. Hai, Y. Takeda, S. Sakamoto, T. Kadono, T. Okane, Y. Saitoh, H. Yamagami, Y. Harada, M. Oshima, M. Tanaka, A. Fujimori, Applied Physics Letters 105 (2014) 032403.
Spin and orbital magnetic moments of Fe in the n-type ferromagnetic semiconductor (In,Fe)As


SLS、原研との共著論文がPhysical Review B誌に掲載されました!

Masaki Kobayashi, Iriya Muneta, Yukiharu Takeda, Yoshihisa Harada, Atsushi Fujimori, Juraj Krempaský, Thorsten Schmitt, Shinobu Ohya, Masaaki Tanaka, Masaharu Oshima, Vladimir N Strocov, Physical Review B 89 (2014) 205204.“Unveiling the impurity band induced ferromagnetism in the magnetic semiconductor (Ga, Mn) As


理研との共著論文(有機溶媒の中の水)がPhysChemChemPhys誌にaccept されました!

Takashi Tokushima, Yuka Horikawa, Osamu Takahashi, Hidemi Arai, Koichiro Sadakane, Yoshihisa Harada, Yasutaka Takata and Shik Shin,Phys. Chem. Chem. Phys.,(2014), DOI: 10.1039/c4cp00762j.
“Solvation dependence of valence electronic states of water diluted in organic solvents probed by soft X-ray spectroscopy”


原研、JASRI、広大との共著論文がPhysical Review Letters誌に掲載されました!

M. Kobayashi, H. Niwa, Y. Takeda, A. Fujimori, Y. Senba, H. Ohashi, A. Tanaka, S. Ohya, P. N. Hai, M. Tanaka, Y. Harada, and M. Oshima, Physical Review Letters,  112 (2014) 107203.
Electronic excitations of magnetic impurity state in diluted magnetic semiconductor (Ga,Mn)As


応化橋本研との共著論文がChemElectroChem誌に掲載されました!

K. Kamiya, H. Koshikawa, H. Kiuchi, Y. Harada, M. Oshima, K. Hashimoto, S. Nakanishi, ChemElectroChem   (2014) 877.
Iron–Nitrogen Coordination in Modified Graphene Catalyzes a Four-Electron-Transfer Oxygen Reduction Reaction


東大応化橋本研(中西先生、神谷君)との共著論文(鉄添加グラフェ ンのORR活性化メカニズムの解明)がChemElectroChem誌(2014年発刊予定)に acceptされました!

K. Kamiya, H. Koshikawa, H. Kiuchi, Y. Harada, M. Oshima, K. Hashimoto, S. Nakanishi, ChemElectroChem, accepted.
“Iron-nitrogen coordination in Fe/N-graphene catalyzes four-electron transfer oxygen reduction reaction”


JASRI、理研との共著論文がJournal of Synchrotron Radiation誌に掲載されました!

Susumu Yamamoto, Yasunori Senba, Takashi Tanaka, Haruhiko Ohashi, Toko Hirono, Hiroaki Kimura, Masami Fujisawa, Jun Miyawaki, Ayumi Harasawa, Takamitsu Seike, Sunao Takahashi, Nobuteru Nariyama, Tomohiro Matsushita, Masao Takeuchi, Toru Ohata, Yukito Furukawa, Kunikazu Takeshita, Shunji Goto, Yoshihisa Harada, Shik Shin, Hideo Kitamura, Akito Kakizaki, Masaharu Oshima, Iwao Matsuda, Journal of Synchrotron Radiation  21 (2014) 352.
New soft X-ray beamline BL07LSU at SPring-8


広大、JASRI、アイスランド大、ストックホルム大、SLACとの共著論文がPhysical Review Letters誌に掲載されました!

Yoshihisa Harada, Takashi Tokushima, Yuka Horikawa, Osamu Takahashi, Hideharu Niwa, Masaki Kobayashi, Masaharu Oshima, Yasunori Senba, Haruhiko Ohashi, Kjartan Thor Wikfeldt, Anders Nilsson, Lars G. M. Pettersson and Shik Shin, Physical Review Letters,  111  (2013) 193001 1-5.
Selective Probing of OH or OD Stretch Vibration in Liquid Water using Resonant Inelastic Soft X-ray Scattering


鉄フタロシアニン由来のハイパーブランチポリマーを原料にした炭素系燃料電池正極触媒の特性を硬X線光電子分光(HXPES)により明らかにした平池君の論文を投稿しました。

Yusuke Hiraike, Makoto Saito, Hideharu Niwa, Masaki Kobayashi, Yoshihisa Harada, Masaharu Oshima, Jaehong Kim, Yuta Nabae, and Masa-aki Kakimoto, submitted to Journal of Power Sources,
“Active site formation mechanism of carbon-based oxygen reduction catalysts derived from a hyperbranched iron phthalocyanine polymer”


GaMnAs中のMnの基底電子状態をMn 2p XAS/RIXSにより明らかにした小林君の論文を再投稿しました。→1/22受理されました。→3/12掲載されました。

M. Kobayashi, H. Niwa, Y. Takeda, A. Fujimori, Y. Senba, H. Ohashi, A. Tanaka, S. Ohya, P. N. Hai, M. Tanaka, Y. Harada, M. Oshima,Phys. Rev. Letters,accepted
Excitations of Magnetic Impurity State in Diluted Magnetic Semiconductor (Ga,Mn)As


燃料電池触媒分析用に開発したオペランド軟X線吸収・発光分光用セルを用いて、発電環境下における炭素系燃料電池正極触媒の酸素吸着過程を観測した丹羽君の論文が出版されました!

Hideharu Niwa, Hisao Kiuchi, Jun Miyawaki, Yoshihisa Harada, Masaharu Oshima, Yuta Nabae and Tsutomu Aoki,Electrochemistry communications 35 ,57 (2013).
Operando Soft X-ray Emission Spectroscopy of Iron Phthalocyanine-based Catalysts for Oxygen Reduction Reaction


東工大、東芝燃料電池システムとの共著論文がElectrochemistry communications誌に掲載されました!

Hideharu Niwa, Hisao Kiuchi, Jun Miyawaki, Yoshihisa Harada, Masaharu Oshima, Yuta Nabae and Tsutomu Aoki, Electrochemistry communications,  35  (2013) 57.
Operando Soft X-ray Emission Spectroscopy of Iron Phthalocyanine-based Catalysts for Oxygen Reduction Reaction


酸素の軟X線発光で水の多重振動を解析し水の2状態モデルを裏付け、水素結合の同位体効果を高感度で検出した論文を投稿しました。⇒11/8online掲載されました!

Y. Harada, T. Tokushima, Y. Horikawa, O. Takahashi, H. Niwa, M. Kobayashi, M. Oshima, Y. Senba, H. Ohashi, K. T. Wikfeldt, A. Nilsson, L. G. M. Pettersson, Shik Shin, Phys. Rev. Lett. 111, 193001 (2013).
Selective Probing of the OH or OD Stretch Vibration in Liquid Water Using Resonant Inelastic Soft-X-Ray Scattering


Lippmaa研川崎君のRh:SrTiO3 O 1s XAS/XESの論文が受理されました。→11/27 online掲載されました!

S. Kawasaki, K. Akagi, K. Nakatsuji, S. Yamamoto, I. Matsuda, Y. Harada, J. Yoshinobu, F. Komori, R. Takahashi, M. Lippmaa, C. Sakai, H. Niwa, M. Oshima, K. Iwashina, A. Kudo, J. Phys. Chem. C 116, 24445 (2012).
Elucidation of Rh-induced in-gap states of Rh:SrTiO3 visible-light-driven photocatalyst by soft x-ray spectroscopy and first-principles calculations


東北大、東京理科大との共著論文がThe Journal of Physical Chemistry C誌に掲載されました!

Seiji Kawasaki, Kazuto Akagi, Kan Nakatsuji, Susumu Yamamoto, Iwao Matsuda, Yoshihisa Harada, Jun Yoshinobu, Fumio Komori, Ryota Takahashi, Mikk Lippmaa,*, Chikako Sakai, Hideharu Niwa, Masaharu Oshima, Katsuya Iwashina and Akihiko Kudo, J. Phys. Chem. C,  116  (2012) 24445.
Elucidation of Rh-Induced In-Gap States of Rh:SrTiO3 Visible-Light-Driven Photocatalyst by Soft X‑ray Spectroscopy and First-Principles Calculations


SLAC、ストックホルム大、理研、ICMAB-CSIC(バルセロナ)との共著論文がJournal of Electron Spectroscopy and Related Phenomena誌に掲載されました!

Anders Nilsson, Takashi Tokushima, Yuka Horikawa, Yoshihisa Harada, Mathias P Ljungberg, Shik Shin, Lars GM Pettersson, J. Electron Spectroscopy and Related Phenomena,  188  (2013) 84.
Resonant inelastic X-ray scattering of liquid water


東工大、原研、北陸先端大、群馬大、NEDOとの共著論文がJournal of Power Sources誌に掲載されました!

Hideharu Niwa, Makoto Saito, Masaki Kobayashi, Yoshihisa Harada, Masaharu Oshima, Shogo Moriya, Katsuyuki Matsubayashi, Yuta Nabae, Shigeki Kuroki, Takashi Ikeda, Kiyoyuki Terakura, Jun-ichi Ozaki, Seizo Miyata, Journal of Power Sources  223  (2013) 30.
Probing carbon edge exposure of iron phthalocyanine-based oxygen reduction catalysts by soft X-ray absorption spectroscopy


東工大、原研、北陸先端大との共著論文がElectrochimica Acta誌に掲載されました!

Hisao Kiuchi, Hideharu Niwa, Masaki Kobayashi, Yoshihisa Harada, Masaharu Oshima, Masayuki Chokai, Yuta Nabae, Shigeki Kuroki, Masa-aki Kakimoto, Takashi Ikeda, Kiyoyuki Terakura, and Seizo Miyta, Electrochimica Acta  82  (2012) 291.
Study on the oxygen adsorption property of nitrogen-containing metal-free carbon-based cathode catalysts for oxygen reduction reaction


筑波大、ミラノ大、ISTM-CNRとの共著論文がPhysical Review B誌に掲載されました!

Takahiro Kondo, Simone Casolo, Tetsuya Suzuki, Taishi Shikano, Masataka Sakurai, Yoshihisa Harada, Makoto Saito, Masaharu Oshima, Mario Italo Trioni, Gian Franco Tantardini, and Junji Nakamura, Phys. Rev. B  86  (2012) 035436. “Atomic-scale characterization of nitrogen-doped graphite: Effects of dopant nitrogen on the local electronic structure of the surrounding carbon atoms


東芝燃料電池システムとの共著論文がJournal of Power Sources誌に掲載されました!

Shoichi HIDAI, Masaki KOBAYASHI, Hideharu NIWA, Yoshihisa HARADA, Masaharu OSHIMA, Yoji NAKAMORI, Tsutomu AOKI, J. Power Sources  215  (2012) 233.
Platinum Oxidation Responsible for Degradation of Platinum-Cobalt Alloy Cathode Catalyst for Polymer Electrolyte Fuel Cell


炭素系燃料電池正極触媒の酸素吸着状態をin situ XPSにより明らかにした木内君の論文(revise版)を投稿しました。→6.7 受理されました。→9/14 online掲載されました!

Hisao Kiuchi, Hideharu Niwa, Masaki Kobayashi, Yoshihisa Harada, Masaharu Oshima, Masayuki Chokai, Yuta Nabae, Shigeki Kuroki, Masa-aki Kakimoto, Takashi Ikeda, Kiyoyuki Terakura and Seizo Miyta,Electrochim. Acta 82, 291 (2012).
Study on the oxygen adsorption property of nitrogen-containing metal-free carbon-based cathode catalysts for oxygen reduction reaction


白金合金(PtCo)触媒の白金酸化過程をXPSにより明らかにした干鯛さんの論文が受理されました。→5.16 出版されました!

Shoichi HIDAI, Masaki KOBAYASHI, Hideharu NIWA Yoshihisa HARADA,
Masaharu OSHIMA, Yoji NAKAMORI, Tsutomu AOKI, J. Power Sources215, 233 (2012).
Platinum Oxidation Responsible for Degradation of Platinum-Cobalt Alloy Cathode Catalysts for Polymer Electrolyte Fuel Cells


小林君のFePc由来カーボンアロイ触媒のXAFS論文が出版されました!

Masaki Kobayashi,* Hideharu Niwa, Makoto Saito, Yoshihisa Harada, Masaharu Oshima, Hironori Ofuchi, Kiyoyuki Terakura, Takashi Ikeda, Yuka Koshigoe, Jun-ichi Ozaki, and Seizo Miyata, Electrochim. Acta 74 , 254 (2012).
Indirect contribution of transition metal towards oxygen reduction reaction activity in iron phthalocyanine-based carbon catalysts for polymer electrolyte fuel cells


理研、JST、JASRIとの共著論文がReview of Scientific Instruments誌に掲載されました!

Y. Harada, M. Kobayashi, H. Niwa, Y. Senba, H. Ohashi, T. Tokushima, Y. Horikawa, S. Shin, M. Oshima, Rev. Sci. Instrum. 83 (2012) 013116.
Ultrahigh Resolution Soft X-Ray Emission Spectrometer at BL07LSU in SPring-8

 


超高分解能軟X線発光分光装置の論文が出版されました!

Y. Harada, M. Kobayashi, H. Niwa, Y. Senba, H. Ohashi, T. Tokushima, Y. Horikawa, S. Shin, and M. Oshima, Rev. Sci. Instrum. 83, 013116 (2012).
Ultrahigh resolution soft x-ray emission spectrometer at BL07LSU in SPring-8


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