AMEMIYA Kenta

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Name
AMEMIYA Kenta
Affiliation
High Energy Accelerator Research Organization
Job title
Associate Professor
Degree
Doctor of Science(The University of Tokyo)
Research funding number
80313196
ORCID ID
0000-0003-2415-6686

Research Areas

 
 

Academic & Professional Experience

 
1999
 - 
2002
Research Associate, Research Center for Spectrochemistry, Graduate School of Science, The University of Tokyo
 
2002
   
 
- Department of Chemistry, Graduate School of Science, The University of Tokyo
 

Education

 
 
 - 
1999
Graduate School, Division of Natural Science, The University of Tokyo
 
 
 - 
1995
Faculty of Science, The University of Tokyo
 

Published Papers

 
Masako Suzuki-Sakamaki, Kenta Amemiya
Japanese Journal of Applied Physics   57(12) 120308-1-120308-4   Dec 2018   [Refereed]
Endo O, Nakamura M, Amemiya K, Ozaki H.
Surface Science   681 32-37   2019   [Refereed]
Isegawa K, Ueda K, Hiwasa S, Amemiya K, Mase K, Kondoh H.
Chemistry Letters   48(2) 159-162   2019   [Refereed]
Koizumi H, Sharmin S, Amemiya K, Suzuki-Sakamaki M, Inoue J.-I, Yanagihara H.
Physical Review Materials   3(2)    2019   [Refereed]
Ukleev V, Yamasaki Y, Morikawa D, Karube K, Shibata K, Tokunaga Y, Okamura Y, Amemiya K, Valvidares M, Nakao H, Taguchi Y, Tokura Y, Arima T.
Physical Review B   99(14)    2019   [Refereed]
Kubota M, Nigo S, Kato S, Amemiya K.
AIP Advances   9(9)    2019   [Refereed]
Amemiya K, Sakamaki M.
AIP Conference Proceedings   2054    2019   [Refereed]
Nakao H, Yamasaki Y, Mizumaki M, Tabata C, Sakamaki M, Amemiya K.
AIP Conference Proceedings   2054    2019   [Refereed]
Osamu Endo, Hiroyuki Ozaki, Masashi Nakamura, Kenta Amemiya
e-Journal of Surface Science and Nanotechnology   16 60-65   Apr 2018   [Refereed]
© 2018 The Japan Society of Vacuum and Surface Science. The presence of a self-assembled monolayer (SAM) of dioctadecyl sulfide (DOS) on a Au(111) electrode affects the underpotential deposition (UPD) of copper in sulfuric acid solution. The first...
K. Amemiya, M. Sakamaki, J. Kisielewski, Z. Kurant, I. Sveklo, M. Tekielak, A. Wawro, A. Maziewski
Journal of Applied Physics   124 123903-1-123903-6   Sep 2018   [Refereed]
© 2018 Author(s). The origin of the focused single-pulse laser irradiation-induced changes in magnetic anisotropy of a Pt/Co/Pt film is investigated by the x-ray absorption near-edge structure and extended x-ray absorption fine structure technique...
Kenta Amemiya, Masako Sakamaki
Japanese Journal of Applied Physics   57 0902B3-1-0902B3-4   Sep 2018   [Refereed]
© 2018 The Japan Society of Applied Physics. The magnetic properties of ferromagnetic Ni thin films grown on a Cu(001) single crystal are modified by the growth of a NiO overlayer, as well as by the voltage application through the NiO/Ni interface...
Masako Sakamaki, Kenta Amemiya
Japanese Journal of Applied Physics   57 0902B9-1-0902B9-4   Sep 2018   [Refereed]
© 2018 The Japan Society of Applied Physics. The insertion effect of an interface NiO layer on magnetism in Fe/BaTiO3is investigated by X-ray absorption spectroscopy (XAS). From X-ray magnetic circular dichroism (XMCD) analysis, the enhancement of...
Masako Sakamaki, Kenta Amemiya
Physical Chemistry Chemical Physics   20(30) 20004-20009   Aug 2018   [Refereed]
Ryunosuke Soma, Yuichi Saitoh, Masako Sakamaki, Kenta Amemiya, Akihiro Iwase, Toshiyuki Matsui
AIP Advances   8 056433-1-056433-4   May 2018   [Refereed]
© 2018 Author(s). Effect of energetic C60 cluster ion irradiation on magnetic properties in FeRh thin films was examined by SQUID and XMCD measurements. The XMCD signal for the C60 irradiated samples is larger than that for the C1 samples in the i...
Kenta Amemiya, Masako Sakamaki
e-Journal of Surface Science and Nanotechnology   16 186-189   May 2018   [Refereed]
© 2018 The Japan Society of Vacuum and Surface Science. Effects of electric fields on magnetization of ferromagnetic Ni films grown on a Cu(001) single crystal covered with antiferromagnetic NiO overlayer are investigated by means of X-ray absorpt...
Takahiro Watanabe, Yoichi Yamada, Akihiro Koide, Shiro Entani, Songtian Li, Zakhar I. Popov, Pavel B. Sorokin, Hiroshi Naramoto, Masahiro Sasaki, Kenta Amemiya, Seiji Sakai
Applied Physics Letters   112 022407-1-022407-5   Jan 2018   [Refereed]
© 2018 Author(s). Ferromagnetism with perpendicular magnetic anisotropy (PMA) was observed at room temperature in cobalt nanoparticles (NPs) grown on hexagonal boron nitride (h-BN) on a Pt(111) surface. It was shown that the Co NPs have planar hex...
Ryo Toyoshima, Nana Hiramatsu, Masaaki Yoshida, Kenta Amemiya, Kazuhiko Mase, Bongjin Simon Mun, Hiroshi Kondoh
Chemical Communications   53 12657-12660   Nov 2017   [Refereed]
© 2017 The Royal Society of Chemistry. Catalytic CO oxidation over Pd(111) and Pd70Au30(111) surfaces was investigated by in situ spectroscopic observations to understand the alloying effect. The reaction behaviour on Pd70Au30(111) is greatly diff...
K. Ikeda, T. Seki, G. Shibata, T. Kadono, K. Ishigami, Y. Takahashi, M. Horio, S. Sakamoto, Y. Nonaka, M. Sakamaki, K. Amemiya, N. Kawamura, M. Suzuki, K. Takahashi, A. Fujimori
Applied Physics Letters   111 142402-1-142402-5   Oct 2017   [Refereed]
© 2017 Author(s). The strong perpendicular magnetic anisotropy of L10-ordered FePt has been the subject of extensive studies for a long time. However, it is not known which element, Fe or Pt, mainly contributes to the magnetic anisotropy energy. W...
Shoya Sakamoto, Kumar Srinivasan, Rui Zhang, Oleg Krupin, Keisuke Ikeda, Goro Shibata, Yosuke Nonaka, Zhendong Chi, Masako Sakamaki, Kenta Amemiya, Atsushi Fujimori, Antony Ajan
Physical Review B   96 144437-1-144437-5   Oct 2017   [Refereed]
© 2017 American Physical Society. We have studied the effect of cobalt substitution in L10-Fe1-xCoxPt films by means of x-ray magnetic circular dichroism (XMCD) and first-principles calculations. The magnetic moments of Fe (∼2.5μB) and Co (∼1.5μB)...
Masako Sakamaki, Kenta Amemiya
Review of Scientific Instruments   88 083901-1-083901-4   Aug 2017   [Refereed]
© 2017 Author(s). We develop a fluorescence-yield depth-resolved soft x-ray absorption spectroscopy (XAS) technique, which is based on the principle that the probing depth is changed by the emission angle of the fluorescence soft x rays. Compared ...
Osamu Endo, Masashi Nakamura, Kenta Amemiya, Hiroyuki Ozaki
Langmuir   33 3934-3940   Apr 2017   [Refereed]
© 2017 American Chemical Society. The influence of the preparation method and adsorbed amount of n-tetratetracontane (n-C44H90) on its orientation in a monolayer on the Au(111) surface is studied by near carbon K-edge X-ray absorption fine structu...
Kenta Amemiya and Masako Sakamaki
Chemistry Letters   46 71-73   Jan 2017   [Refereed]
Kohei Ueda, Masaaki Yoshida, Kazuhisa Isegawa, Naoki Shirahata, Kenta Amemiya, Kazuhiko Mase, Bongjin Simon Mun, Bongjin Simon Mun, Hiroshi Kondoh
Journal of Physical Chemistry C   121 1763-1769   Jan 2017   [Refereed]
© 2017 American Chemical Society. The nitric oxide (NO) reduction by carbon monoxide (CO) on Ir(111) surfaces under near ambient pressure conditions was studied by a combination of near-ambient-pressure X-ray photoelectron spectroscopy (NAP-XPS) a...
M.Sakamaki, K.Amemiya, I.Sveklo, P.Mazalski, M.O.Liedke, J.Fassbender, Z.Kurant, A.Wawro, and A.Maziewski
Physical Review B   94 174422-1-174422-8   Nov 2016   [Refereed]
K.Amemiya, M.Sakamaki, S.Kishimoto, T.Kosuge, K.Nigorikawa, M.Tanaka, T.Uchida, M.Saito, M.Ikeno, and K.Nakayoshi
Journal of Physics: Conference Series   712 0120033-1-0120033-4   Jul 2016   [Refereed]
Akira Nambu, Kazuhiro Ueda, Koji Horiba, Kimichika Tsuchiya, Hiroshi Kumigashira, Kenta Amemiya
AIP Conference Proceedings   1741 030041   Jul 2016   [Refereed]
© 2016 Author(s). A new soft x-ray beamline BL-2B at Photon Factory of High Energy Accelerator Research Organization (KEK-PF) covers energy range from vacuum ultraviolet (30 eV) to soft x-ray (4000 eV). This wide energy range could be achieved by ...
K. Ueda, K. Suzuki, R. Toyoshima, Y. Monya, M. Yoshida, K. Isegawa, K. Amemiya, K. Mase, B. S. Mun, M. A. Arman, E. Grånäs, J. Knudsen, J. Knudsen, J. Schnadt, H. Kondoh
Topics in Catalysis   59 487-496   Mar 2016   [Refereed]
© 2015 Springer Science+Business Media New York. The adsorption and reaction of CO and NO on Ir(111) have been studied by near-ambient pressure X-ray photoelectron spectroscopy (NAP-XPS) together with low-energy electron diffraction, scanning tunn...
H.Kondoh, R.Toyoshima, Y.Monya, M.Yoshida, K.Mase, K.Amemiya, and B.S.Mun
Catalysis Today   260 14-20   Feb 2016   [Refereed]
O.Endo, M.Nakamura, K.Amemiya, and H.Ozaki
Journal of Physical Chemistry C   120 5495-5502   Feb 2016   [Refereed]
R.Toyoshima, N.Hiramatsu, M.Yoshida, K.Amemiya, K.Mase, B.Mun, H.Kondoh
Journal of Physical Chemistry C   120 416-421   Jan 2016   [Refereed]
T.Matsui, K.Aikoh, M.Sakamaki, K.Amemiya, and A.Iwase
Nuclear Instruments and Methods in Physics Research B   365 187-190   Dec 2015   [Refereed]
K.Amemiya and M.Sakamaki
e-Journal of Surface Science and Nanotechnology   13 465-468   Dec 2015   [Refereed]
Takahiro Maruyama, Shigeya Naritsuka, Kenta Amemiya
Journal of Physical Chemistry C   119 26698-26705   Nov 2015   [Refereed]
© 2015 American Chemical Society. Carbon nanotubes (CNTs) and epitaxial graphene on SiC substrates formed by thermal decomposition are of great interest for electronic and optoelectronic applications. The initial decomposition process of a SiC sur...
T. Miyazaki, R. Sumii, R. Sumii, H. Tanaka, K. Amemiya, S. Hino
Research on Chemical Intermediates   41 7405-7412   Oct 2015   [Refereed]
Ultraviolet photoelectron spectra (UPS) of lithium nickel oxide (Li <inf>x</inf> Ni<inf>2-x</inf> O<inf>2</inf>, 0 < x 1.0) solid solution were measured using a synchrotron radiation light source. The upper valence UPS are confirmed to consist of ...
A.Toyoshima, T.Kikuchi, H.Tanaka, K.Mase, and K.Amemiya
Journal of Synchrotron Radiation   22 1359-1363   Sep 2015   [Refereed]
O.Endo, M.Nakamura, K.Amemiya, and H.Ozaki
Surface Science   635 44-48   May 2015   [Refereed]
O.Endo H.Ozaki, M.Nakamura, and K.Amemiya
e-Journal of Surface Science and Nanotechnology   13 209-212   May 2015   [Refereed]
M.Sakamaki and K.Amemiya
e-Journal of Surface Science and Nanotechnology   13 139-142   Apr 2015   [Refereed]
T.Koide, H.Uno, H.Sakane, M.Sakamaki, K.Amemiya, A.Iwase, and T.Matsui
Journal of Applied Physics   117 17E503   Mar 2015   [Refereed]
R.Toyoshima, M.Yoshida, Y.Monya, K.Suzuki, K.Amemiya, K.Mase, B.S.Mun, and H.Kondoh
Journal of Physical Chemistry C   119 3033-3039   Jan 2015   [Refereed]
K.Amemiya, M.Sakamaki, M.Mizusawa, and M.Takeda
JPS Conference Proceedings   8 034004-1-034004-6   2015   [Refereed]
Ryo Toyoshima, Masaaki Yoshida, Yuji Monya, Kazuma Suzuki, Kenta Amemiya, Kazuhiko Mase, Bongjin Simon Mun, Hiroshi Kondoh
Physical Chemistry Chemical Physics   16 23564-23567   Oct 2014   [Refereed]
We investigated the high-density CO adsorption phase formed on a Pt(111) surface when exposed to CO gas of pressure ranging from UHV to 100 mTorr using near-ambient-pressure (NAP)-XPS. Combined results from the NAP-XPS measurements and DFT calcula...
H.Abe, M.Sakamaki, and K.Amemiya
Journal of the Physical Society of Japan   83 084603-1-084603-4   Jul 2014   [Refereed]
T.Koide, Y.Saitoh, M.Sakamaki, K.Amemiya, A.Iwase, and T.Matsui
Journal of Applied Physics   115 17B722   May 2014   [Refereed]
H. Kondoh, Y. Higashi, M. Yoshida, Y. Monya, R. Toyoshima, K. Mase, K. Amemiya, F. Tsukioka, K. Mukai, J. Yoshinobu
Electrochemistry   82 341-345   May 2014   [Refereed]
Y.Nanba, D.Asakura, M.Okubo, H.Zhou, K.Amemiya, K.Okada, P.-A. Glans, C.A.Jenkins, E.Arenholz, and J.Guo
Physical Chemistry Chemical Physics   16 7031-7036   Apr 2014   [Refereed]
M. Sakamaki, K. Amemiya
Journal of Physics: Condensed Matter   26 166002-1-166002-6   Apr 2014   [Refereed]
R.Toyoshima, M.Shimura, M.Yoshida, Y.Monya, K.Suzuki, K.Amemiya, K.Mase, B.S.Mun, and H.Kondoh
Surf. Sci.   621 128-132   Mar 2014   [Refereed]
K. Amemiya, M. Sakamaki, M. Mizusawa, M. Takeda
Physical Review B   89 054404-1-054404-6   Feb 2014   [Refereed]
Osamu Endo, Masashi Nakamura, Kenta Amemiya
Journal of Physics: Conference Series   502 012037-1-012037-4   Jan 2014   [Refereed]
Polarization-dependent X-ray absorption fine structure spectroscopy at the carbon near K-edge (C K-NEXAFS) is developed for a layer-by-layer analysis, by measuring the distribution of electrons emitted by X-ray absorption as a function of emission...

Misc

 
Recent developments of the wavelength-dispersive XAFS technique in the soft X-ray region
AMEMIYA Kenta
25 269-274   2012
Akio Toyoshima, Hirokazu Tanaka, Takashi Kikuchi, Kenta Amemiya, Kazuhiko Mase
Journal of the Vacuum Society of Japan   54 580-584   Dec 2011
The present status of a new vacuum ultraviolet/soft X-ray (VUV/SX) beamline (BL-13A) used for the study of organic thin films adsorbed on surfaces is described. The base pressure of BL-13A is maintained below 1 × 10-8Pa in order to prevent contami...
Hiroshi Kondoh, Ikuyo Nakai, Masanari Nagasaka, Kenta Amemiya, Toshiaki Ohta
Journal of the Vacuum Society of Japan   52 73-79   Jan 2009
A new version of synchrotron-radiation-based x-ray spectroscopy, wave-length-dispersive near-edge x-ray absorption fine structure (dispersive-NEXAFS), and fast x-ray photoelectron spectroscopy have been applied to mechanistic studies on several su...

Research Grants & Projects

 
Design of a soft x-ray monochromator
Project Year: 2002   
Developement of a depth-resolved x-ray absorption fine structure technique
Grant-in-Aid for Scientific Research
Project Year: 2001   
In situ observation of surface chemical reaction
Grant-in-Aid for Scientific Research
Project Year: 2000   
Manipulation of Magnetic Anisotropy by Molecular Adsorption
Grant-in-Aid for Scientific Research
Project Year: 1999   
Effects of Molecular Adsorption on Surface Magnetism
Grant-in-Aid for Scientific Research
Project Year: 1999