Welcome!
【Name】 Hirokazu Fujiwara
【Belonging】 Thin film physical properties study
laboratory D3
Research Fellowship for Young Scientists, DC1
(JSPS)
【Research】 Ferromagnets, Topological materials,
Spin-resolved ARPES
【Hometown】 Okayama Prefecture, Japan
【Research achievement】
［Paper］
「Origins of Thermal Spin Depolarization in
Half-Metallic Ferromagnet CrO2」
Hirokazu Fujiwara, Kensei Terashima,
Masanori Sunagawa, Yuko Yano, Takanobu Nagayama, Tetsushi Fukura, Fumiya Yoshii,
Yuka Matsuura, Makoto Ogata, Takanori Wakita, Koichiro Yaji, Ayumi Harasawa,
Kenta Kuroda, Shik Shin, K. Horiba, H. Kumigashira, Yuji Muraoka, and Takayoshi
Yokoya
Phys.
Rev. Lett. 121, 257201 (2018).
「Observation of intrinsic half-metallic
behavior of CrO2 (100) epitaxial films by bulk-sensitive
spin-resolved PES」
Hirokazu Fujiwara, Masanori Sunagawa, Kensei Terashima,
Tomoko Kittaka, Takanori Wakita, Yuji Muraoka, Takayoshi Yokoya
J. Electron Spectrosc. Relat. Phenom. 220, 46 (2017).
「Intrinsic spin polarized electronic
structure of CrO2 epitaxial film revealed by bulk-sensitive spin-resolved
photoemission spectroscopy」
Hirokazu Fujiwara, Masanori Sunagawa, Kensei Terashima,
Tomoko Kittaka, Takanori Wakita, Yuji Muraoka, and Takayoshi Yokoya
Appl.
Phys. Lett. 106, 202404 (2015).
「Evolution of the remnant Fermi-surface
state in the lightly doped correlated spin-orbit insulator Sr2-xLaxIrO4」
K. Terashima, M. Sunagawa, H. Fujiwara, T. Fukura,
M. Fujii, K. Okada, K. Horigane, K. Kobayashi, R. Horie, J. Akimitsu, E.
Golias, D. Marchenko, A. Varykhalov, N. L. Saini, T. Wakita, Y. Muraoka, T.
Yokoya
Phys.
Rev. B 96, 041106 (2017).
「Direct observation of double valence-band
extrema and anisotropic effective masses of the thermoelectric material SnSe」
T. Nagayama, K. Terashima, T. Wakita, H. Fujiwara,
T. Fukura, Y. Yano, K. Ono, H. Kumigashira, O. Ogiso, A. Yamashita, Y. Takano,
H. Mori, H. Usui, M. Ochi, K. Kuroki, Y. Muraoka, and T. Yokoya
Jpn.
J. Appl. Phys. 57, 010301 (2018).
「Unusual upper critical field behavior in
Nb-doped bismuth selenides」
K. Kobayashi, T. Ueno, H. Fujiwara, T.
Yokoya, and J. Akimitsu.
Phys. Rev. B 95, 180503(R) (2017).
「Ce 4f electronic states of CeO1－xFxBiS2 studied by soft x-ray photoemission
spectroscopy」
Takanori Wakita, Kensei Terashima, Takahiro Hamada, Hirokazu Fujiwara, Makoto
Minohara, Masaki Kobayashi, Koji Horiba, Hiroshi Kumigashira, Galif Kutluk,
Masanori Nagao, Satoshi Watauchi, Isao Tanaka, Satoshi Demura, Hiroyuki Okazaki,
Yoshihiko Takano, Yoshikazu Mizuguchi, Osuke Miura, Kozo Okada, Yuji Muraoka,
and Takayoshi Yokoya
Phys. Rev. B 95, 085109 (2017).
「Pressure-dependent magnetization and
magnetoresistivity studies on tetragonal FeS (mackinawite): revealing its
intrinsic metallic character」
S J Denholme, H Okazaki, S Demura, K Deguchi, M Fujioka,
T Yamaguchi, H Takeya, M ElMassalami, H Fujiwara, T Wakita, T
Yokoya and Y Takano
Sci.
Technol. Adv. Mater. 15, 055007 (2014).
「Comparaive ARPES studied of LaOxF1-xBiS2（x=0.23 and 0.46）」
K Terashima, T Wakita, M Sunagawa, H Fujiwara,
T Nagayama, K Ono, H Kumigashira, M Nagao, S Watauchi, I Tanaka, H Okazaki, Y
Takano, Y Mizuguchi, H Usui, K Kuroki, Y Muraoka and T Yokoya
J. Phys:
Conference Series 683, 012002 (2016).
「Bulk sensitive angle-resolved
photoelectron spectroscopy on Nd(O,F)BiS2」
K Terashima, J Sonoyama, M Sunagawa, H Fujiwara,
T Nagayama, T Muro, M Nagao, S Watauchi, I Tanaka, H Okazaki, Y Takano, Y Mizuguchi,
H Usui, K Suzuki, K Kuroki, T Wakita, Y Muraoka and T Yokoya
J. Phys:
Conference Series 683, 012003 (2016).
「Observation of a Hidden Hole-Like Band
Approaching the Fermi Level in K-Doped Iron Selenide Superconductor」
Masanori Sunagawa, Kensei Terashima, Takahiro
Hamada, Hirokazu Fujiwara, Tetsushi Fukura, Aya Takeda, Masashi
Tanaka, Hiroyuki Takeya, Yoshihiko Takano, Masashi Arita, Kenya Shimada,
Hirofumi Namatame, Masaki Taniguchi, Katsuhiro Suzuki, Hidetomo Usui, Kazuhiko
Kuroki, Takanori Wakita, Yuji Muraoka, and Takayoshi Yokoya
J. Phys.
Soc. Jpn. 85, 073704 (2016).
［Meeting］
「Fundamental mechanisms of spin
depolarization in half-metallic ferromagnet CrO2 revealed by
high-resolution spin-resolved photoemission spectroscopy」
Hirokazu Fujiwara, K. Terashima, M. Sunagawa, Y. Yano, T.
Nagayama, T. Fukura, F. Yoshii, Y. Matsuura, M. Ogata, T. Wakita, K. Yaji, A.
Harasawa, K. Kuroda, S. Shin, Y. Muraoka, and T. Yokoya
『ICM 2018』, San Francisco, the U.S., (July 2018)
「Intrinsic electronic structure of
high-quality CrO2 epitaxial film prepared by a closed-system CVD
method」(invited)
Hirokazu Fujiwara
『Energy Materials and Nanotechnology (EMN)
Meeting on Epitaxy 2018』, Vienna, Austria (June 2018)
「Finite Temperature Effects in Half-metal
CrO2 Studied by Bulk-sensitive Spin-resolved Photoemission
Spectroscopy」
Hirokazu Fujiwara, Masanori Sunagawa, Kensei Terashima,
Tomoko Kittaka, Makoto Ogata, Takanori Wakita, Yuji Muraoka, Takayoshi Yokoya
『International Workshop on
Superconductivity and Related Functional Materials (IWSRFM) 2016』, Tsukuba, Japan
「Observation of Intrinsic Half-metallic
Behavior of CrO2 (100) Epitaxial Films by Bulk-sensitive
Spin-resolved PES」
H. Fujiwara, M. Sunagawa, K. Terashima, T. Kittaka, T.
Wakita, Y. Muraoka, and T. Yokoya
『The 39th International conference on
Vacuum Ultraviolet and X-ray Physics』, Zurich, Switzerland (July 2016)
「Bulk sensitive spin- and angle-resolved
photoemission spectroscopy of half-metallic ferromagnet CrO2」
H. Fujiwara, M. Sunagawa, T. Kittaka, K. Terashima, T. Wakita, Y.
Muraoka, T. Yokoya
『Ushimado International Workshop on
Physics and Chemistry of Novel Superconductors and Related Materials』, Okayama, Japan, (November 2014)
「Clarification of electronic structures of
CoS2 by high-resolution spin-resolved ARPES」
H. Fujiwara, K. Terashima, T. Wakita, Y. Yano, W. Hosoda,
N. Kataoka, A. Teruya, M. Kakihana, M. Hedo, T. Nakama, Y. Onuki, K. Yaji, A.
Harasawa, K. Kuroda, S. Shin, K. Horiba, H. Kumigashira, Y. Muraoka, T. Yokoya
JPS Fall Meeting 2018
「Observation of electronic structure of
half-metal candidate CoS2 by high-resolution spin- resolved ARPES」
H. Fujiwara, K. Terashima, T. Wakita, Y. Yano, W. Hosoda,
N. Kataoka, A. Teruya, M. Kakihana, M. Hedo, T. Nakama, Y. Onuki, K. Yaji, A.
Harasawa, K. Kuroda, S. Shin, K. Horiba, H. Kumigashira, Y. Muraoka, T. Yokoya
JPS Fall Meeting 2018
「Origins of spin depolarization in
half-metal CrO2: High-resolution spin-resolved photoemission
spectroscopy study」
Hirokazu Fujiwara, K. Terashima, M. Sunagawa, Y. Yano, F.
Yoshii, Y. Matsuura, M. Ogata, K. Yaji, A. Harasawa, K. Kuroda, S. Shin, T.
Wakita, Y. Muraoka, T. Yokoya
The 65th JSAP Spring Meeting
「Observation of spin depolarization in
half-metal CrO2 by high resolution spin-resolved photoemission
spectroscopy」
Hirokazu Fujiwara，K. Terashima，M. Sunagawa，Y. Yano，M. Ogata，K. Yaji，A. Harasawa，S. Shin，T. Wakita，Y. Muraoka，T. Yokoya
JPS Fall Meeting 2017
「Observation spin depolarization due to
thermal fluctuation in half-metal CrO2: High-resolution
spin-resolved PES」
Hirokazu Fujiwara, Masanori Sunagawa, Kensei Terashima,
Makoto Ogata, Koichiro Yaji, Ayumi Harasawa, Shik Shin, Takanori Wakita, Yuji
Muraoka, Takayoshi Yokoya
JPS Spring Meeting 2017
「Intrinsic half-metallicity of CrO2 revealed
by bulk-sensitive spin-resolved photoemission spectroscopy」
Hirokazu Fujiwara, Masanori Sungawa, Kensei Terashima,
Tomoko Kittaka Makoto Ogata, Takanori Wakita, Yuji Muraoka, Takayoshi Yokoya
JSAP Fall Meeting 2016
「Observation of metallic surface states on
CrO2 (001) films by depth-resolved photoemission spectroscopy」
Hirokazu Fujiwara, Masanori Sunagawa, Tomoko Kittaka,
Takanori Wakita, Kensei Terashima, Takanobu Nagayama, Makoto Ogata, Yuka
Matsuura, Fumiya Yoshii, Shin-ichiro Ideta, Kiyohisa Tanaka, Yuji Muraoka,
Takayoshi Yokoya
JSAP Fall Meeting 2016
「Intrinsic half-metallic electronic states
of CrO2: Bulk-sensitive spin-resolved photoemission spectroscopy」
Hirokazu Fujiwara, Masanori Sungawa, Kensei Terashima,
Tomoko Kittaka, Makoto Ogata, Takanori Wakita, Yuji Muraoka, Takayoshi Yokoya
Annual Meetings of Chugoku-Shikoku chapter of JSAP 2016
「Surface metallicity of half-metal CrO2(001)
films」
Hirokazu Fujiwara, Masanori Sunagawa, Kensei Terashima,
Takamasa Nagayama, Tomoko Kittaka, Makoto Ogata, Shin-ichiro Ideta, Kiyohisa
Tanaka, Takanori Wakita, Yuji Muraoka, Takayoshi Yokoya
JPS Spring Meeting 2016
「Half-metallicity of CrO2 revealed
by bulk-sensitive spin-resolved photoemission spectroscopy」
Hirokazu Fujiwara，Masanori Sunagawa，Kensei Terashima，Tomoko Kittaka，Makoto Ogata，Takanori Wakita，Yuji Muraoka，Takayoshi Yokoya
JCS West Japan Chemistry Forum 2015
「Intrinsic electronic states of
ferromagnetic metal CrO2 revealed by bulk-sensitive spin-resolved
photoemission spectroscopy」
Hirokazu Fujiwara，Masanori Sunagawa，Kensei Terashima，Tomoko Kittaka，Makoto Ogata，Takanori Wakita，Yuji Muraoka，Takayoshi Yokoya
JPS Fall Meeting 2015
「Bulk sensitive spin-resolved
photoemission spectroscopy of half-metallic ferromagnet CrO2 II」
Hirokazu Fujiwara，Masanori Sunagawa，Tomoko Kittaka，Makoto Ogata，Kensei Terashima，Takanori Wakita，Yuji Muraoka，Takayoshi Yokoya
JPS Spring Meeting 2015
「Bulk sensitive spin-resolved photoemission
spectroscopy of half-metallic ferromagnet CrO2」
Hirokazu Fujiwara，Masanori Sunagawa，Tomoko Kittaka，Kensei Terashima，Takanori Wakita，Yuji Muraoka，Takayoshi Yokoya
JPS Fall Meeting 2014
【Award】
・Student Best Presentation Award of JPS Autumn
Meeting 2018
・Incentive Award of the 21th JSAP
Fall Meeting
・Best Master’s Thesis Award (Okayama
University)
・Dean Award of Graduation School of
Natural Science and Technology, Okayama University
【Other activities】
・MaMaSELF Summer School (September 2014,
Montpellier, France)
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of Science at Okayama University
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