Kazuyasu Tokiwa

Profile Information

Affiliation: Faculty of Advanced Engineering, Department of Applied Electronics, Tokyo University of Science

Degree: Doctor of Science(Tokyo University of Science)

Contact information: tokiwars.tus.ac.jp
J-GLOBAL ID: 200901005489865033
researchmap Member ID: 1000242985

Research Interests

Functional Oxide Materials

Research Areas

Nanotechnology/Materials / Applied materials /

Awards

Apr, 2019

超伝導科学技術賞
Dec, 2009

学校法人東京理科大学優秀研究者奨励賞

Papers

229

Unveiling phase diagram of the lightly doped high-Tc cuprate superconductors with disorder removed

Kifu Kurokawa, Shunsuke Isono, Yoshimitsu Kohama, So Kunisada, Shiro Sakai, Ryotaro Sekine, Makoto Okubo, Matthew D. Watson, Timur K. Kim, Cephise Cacho …

Nature Communications, Jul 14, 2023
Vortex arrangement in an ultrathin superconducting bilayer disc

Hiroshi Ishizu, Hirotake Yamamori, Shunichi Arisawa, Taichiro Nishio, Kazuyasu Tokiwa, Yasumoto Tanaka

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 605 1354208, Feb, 2023 Peer-reviewed
Electrical mapping of thermoelectric power factor in WO<inf>3</inf> thin film

Sunao Shimizu, Tomoya Kishi, Goki Ogane, Kazuyasu Tokiwa, Shimpei Ono

Scientific Reports, 12(1), Dec, 2022
Observation of multiple fractional quanta in a superconducting bilayer disk with a pinhole

Hiroshi Ishizu, Hirotake Yamamori, Shunichi Arisawa, Taichiro Nishio, Kazuyasu Tokiwa, Yasumoto Tanaka

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 600 1354103, Sep, 2022 Peer-reviewed
Phase shifter based on an ultrathin superconducting bilayer with a through-hole for a superconducting device

Hiroshi Ishizu, HirotakeYamamori, Shunichi Arisawa, KazuyasuTokiwa, YasumotoTanakaa

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 595 1354029, Apr, 2022 Peer-reviewed
Observation of small Fermi pockets protected by clean CuO2 sheets of a high-T-c superconductor

So Kunisada, Shunsuke Isono, Yoshimitsu Kohama, Shiro Sakai, Cedric Bareille, Shunsuke Sakuragi, Ryo Noguchi, Kifu Kurokawa, Kenta Kuroda, Yukiaki Ishida …

SCIENCE, 369(6505) 833-+, Aug, 2020
Ferromagnetic 2/1 quasicrystal approximants

K. Inagaki, S. Suzuki, A. Ishikawa, T. Tsugawa, F. Aya, T. Yamada, K. Tokiwa, T. Takeuchi, and R. Tamura

PHYS REV B, 101(18) 180405, May, 2020 Peer-reviewed
Growth and Characterization of CdTe Single Crystals Prepared by the “Liquinert Processed” Vertical Bridgman Method for Radiation Detectors

Ryotaro Sekine, Mizuki Uenomachi, Hiroki Asafusa, Kazuyasu Tokiwa, Kenji Shimazoe, Hiroyuki Takahashi, Yoshiyuki Harada, Akira Fujimoto, Takeshi Hirai, and Shiro Sakuragi

CRYST GROWTH DES, 19(11) 6218-6223, Sep, 2019 Peer-reviewed
States of thermochemically or electrochemically synthesized NaxPy compounds analyzed by solid state 23Na and 31P nuclear magnetic resonance with theoretical calculation

Ryohei Morita, Kazuma Gotoh, Mouad Dahbi, Kei Kubota, Shinichi Komaba, Kazuyasu Tokiwa, Saeid Arabnejad, Koichi Yamashita, Kenzo Deguchi, Shinobu Ohki …

J POWER SOURCES, 413 418-424, Dec, 2018 Peer-reviewed
Different electronic states at crystallographically inequivalent CuO2 planes on four-layered cuprates HgBa2Ca3Cu4O10+δ

R. Sekine, S. Nakayama, A. Tsukada, S. J. Denholme, N. Miyakawa, K. Tokiwa

Journal of Physics: Conference Series, 969(1) 012031/1-012031/6, Apr 19, 2018 Peer-reviewed
Superconducting state of Ba₂Ca₄Cu₅O₁₀(F,O)₂ studied by a laser-ARPES.

Kunisada So, Kondo Takeshi, Kohama Yoshimitsu, Isono Syunsuke, Adachi Shintaro, Bareille C, Sekine Ryotaro, Kuroda Kenta, Tokiwa Kazuyasu, Shin Shik

Meeting Abstracts of the Physical Society of Japan, 73 2053-2053, 2018 Peer-reviewed
Multilayered cuprate superconductor Ba2Ca5Cu6 O12(O1-x, Fx)2 studied by temperature-dependent scanning tunneling microscopy and spectroscopy

Akira Sugimoto, Toshikazu Ekino, Alexander M. Gabovich, Ryotaro Sekine, Kenji Tanabe, Kazuyasu Tokiwa

Physical Review B, 95(17) 174508-1-174508-11, May 16, 2017 Peer-reviewed
Novel Interplay between High-T-c Superconductivity and Antiferromagnetism in Tl-Based Six-CuO2-Layered Cuprates: Tl-205- and Cu-63-NMR Probes

Hidekazu Mukuda, Nozomu Shiki, Naoki Kimoto, Mitsuharu Yashima, Yoshio Kitaoka, Kazuyasu Tokiwa, Akira Iyo

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 85(8) 083701-1-083701-4, Aug, 2016 Peer-reviewed
Soft chemical synthesis and electrochemical properties of calcium ferrite-type LixMn2O4

Mikito Mamiya, Kazuyasu Tokiwa, Junji Akimoto

JOURNAL OF POWER SOURCES, 310 12-17, Apr, 2016 Peer-reviewed
Characteristic Features of the Mode Energy Estimated from Tunneling Conductance on TlBa2Ca2Cu3O8.5+delta

Ryotaro Sekine, Saleem J. Denholme, Akio Tsukada, Susumu Kawashima, Mitsumasa Minematsu, Takashi Inose, Satoshi Mikusu, Kazuyasu Tokiwa, Tsuneo Watanabe, Nobuaki Miyakawa

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 85(2) 024702-1-024702-7, Mar, 2016 Peer-reviewed
Characteristic Features of the Mode Energy Estimated from Tunneling Conductance on TlBa2Ca2Cu3O8.5+delta

Ryotaro Sekine, Saleem J. Denholme, Akio Tsukada, Susumu Kawashima, Mitsumasa Minematsu, Takashi Inose, Satoshi Mikusu, Kazuyasu Tokiwa, Tsuneo Watanabe, Nobuaki Miyakawa

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 85(2) 024702-1-024702-7, Mar, 2016 Peer-reviewed
Black Phosphorus as a High-Capacity, High-Capability Negative Electrode for Sodium-Ion Batteries: Investigation of the Electrode/Interface

Mouad Dahbi, Naoaki Yabuuchi, Mika Fukunishi, Kei Kubota, Kuniko Chihara, Kazuyasu Tokiwa, Xue-fang Yu, Hiroshi Ushiyama, Koichi Yamashita, Jin-Young Son …

CHEMISTRY OF MATERIALS, 28(6) 1625-1635, Mar, 2016 Peer-reviewed
Composition-driven spin glass to ferromagnetic transition in the quasicrystal approximant Au-Al-Gd

A. Ishikawa, T. Hiroto, K. Tokiwa, T. Fujii, R. Tamura

Physical Review B, 93(2), Jan 21, 2016 Peer-reviewed
22aCE-3 Synthesis of Au-Al-RE approximants

Ito N., Ishikawa A., Hiroto T., Tokiwa K., Tamura R.

Meeting Abstracts of the Physical Society of Japan, 71 1778-1778, 2016
20pBM-1 Strong magnetic interlayer coupling in six-layered cuprates observed from charge reservoir layer

Shiki N., Kimoto N., Mukuda H., Kitaoka Y., Hashimoto T., Tokiwa K., Iyo A.

Meeting Abstracts of the Physical Society of Japan, 71 2070-2070, 2016

Misc.

515

Electronic state near the Mott insulating state in a clean CuO₂ layer studied by laser-ARPES

黒川輝風, 磯野隼佑, 小濱芳允, 國定聡, 酒井志朗, 関根遼太郎, 大久保卓, 鶴川智一, 黒田健太, SHIN S. …

日本物理学会講演概要集(CD-ROM), 75(1), 2020
角度分解光電子分光で解明する銅酸化物高温超伝導体のモット絶縁相近傍の超伝導状態

國定聡, 磯野隼佑, 小濱芳允, 酒井志朗, BAREILLE C., 足立伸太郎, 櫻木俊輔, 野口亮, 黒川輝風, 黒田健太 …

日本物理学会講演概要集(CD-ROM), 74(1), 2019
CuO₂面の枚数に依存した多層型銅酸化物超伝導体の電子状態:レーザーARPESとdHvA効果による研究

黒川輝風, 磯野隼佑, 小濱芳允, 國定聡, 酒井志朗, 関根遼太郎, 大久保卓, 鶴川智一, 黒田健太, SHIN S. …

日本物理学会講演概要集(CD-ROM), 74(2), 2019
レーザーARPESとdHvA効果で解明する五層型銅酸化物高温超伝導体の超伝導と反強磁性の関係

國定聡, 小濱芳允, 磯野隼佑, 酒井志朗, 足立伸太郎, BAREILLE Cedric, 黒田健太, 関根遼太郎, 常盤和靖, 辛埴 …

日本物理学会講演概要集(CD-ROM), 73(2), 2018
Au-Al-RE系1/1近似結晶の作製と磁性 II

石川明日香, 常盤和靖, 藤井武則, 竹内恒博, 田村隆治

日本物理学会講演概要集(CD-ROM), 72(1), 2017
Au-SM-RE系近似結晶の構造と磁性

石川明日香, 常盤和靖, 松下能孝, 藤井武則, 竹内恒博, 田村隆治

日本物理学会講演概要集(CD-ROM), 72(2), 2017
Au-Al-Gd系1/1近似結晶の作製と磁性 II

石川明日香, 廣戸孝信, 常盤和靖, 藤井武則, 竹内恒博, 田村隆治

日本物理学会講演概要集(CD-ROM), 71(1), 2016
Au-Al-Gd系1/1近似結晶の磁性

石川明日香, 常盤和靖, 藤井武則, 竹内恒博, 田村隆治

日本物理学会講演概要集(CD-ROM), 71(2), 2016
9aPS-75 Cu-NMR study on antiferromagnetism and superconductivity in six-layered high-T_c cuprates

Shiki N., Kimoto N., Mukuda H., Kitaoka Y., Hashimoto T., Tokiwa K., Iyo A.

Meeting abstracts of the Physical Society of Japan, 69(2) 420-420, Aug 22, 2014
9aPS-63 Electronic transport properties of hexagonal WO_<3・δ> thin films

Ishii S., Yamanaka J., Kawasaki Y., Tanabe K., Tokiwa K.

Meeting abstracts of the Physical Society of Japan, 69(2) 417-417, Aug 22, 2014
27pPSA-63 Fabrication of hexagonal-WO_3 thin-films

Ishii S., Kawasaki Y., Tanabe K., Tokiwa K., Tsukada A., Munakata Ko, Wu Philhp M, Hammond Robert, Geballe Theodore, Beasley Malcolm

Meeting abstracts of the Physical Society of Japan, 69(1) 577-577, Mar 5, 2014
28aCM-10 Cu-NMR study on antiferromagnetism and superconductivity in six-layered high-T_c cuprates

Kimoto N., Kaneda T., Shiki N., Mukuda H., Kitaoka Y., Hashimoto T., Tokiwa K., Iyo A.

Meeting abstracts of the Physical Society of Japan, 69(1) 592-592, Mar 5, 2014
30pCB-10 Ferromagnetism in Au-SM-R icosahedral approximants

Hiroto T., Tokiwa K., Tamura R.

Meeting abstracts of the Physical Society of Japan, 69(1) 820-820, Mar 5, 2014
30pCB-9 Preparation and physical properties of Tsai type approximants in Ga system

Oki S., Kinoshita Y., Hiroto T., Tokiwa K., Tamura R.

Meeting abstracts of the Physical Society of Japan, 69(1) 820-820, Mar 5, 2014
(Cu,C)系超伝導層を基幹とする積層構造における界面歪効果

酒瀬川健人, 古賀慎一, 団一星, 小原幸三, 真中浩貴, 田中康資, 伊豫彰, SUNDARESAN A., 常盤和靖, 寺田教男 …

応用物理学会春季学術講演会講演予稿集(CD-ROM), 61st, 2014
Observation of the gap distributions on apical-multilayered superconductor Ba_2Ca_4Cu_5O_<10>(O,F)_2 by STM/STS

Sugimoto Akira, Tanaka Katsuhiro, Mineta Kyohei, Tanabe Kenji, Tokiwa Kazuyasu, Ekino Toshikazu

Meeting abstracts of the Physical Society of Japan, 68(2) 548-548, Aug 26, 2013
Cu-NMR study on antiferromagnetism and superconductivity in six-layered high-Tc cuprates

Kimoto N., Kaneda T., Mukuda H., Kitaoka Y., Hashimoto T., Tokiwa K., Iyo A.

Meeting abstracts of the Physical Society of Japan, 68(2) 547-547, Aug 26, 2013
Analysis of dip feature on tunneling conductance of multilayer cuprates

Sekine R., Kawashima S., Ogata K., Inose T., Watanabe G, Mikusu S., Tokiwa K., Watabe T., Tsukada A., Miyakawa N.

Meeting abstracts of the Physical Society of Japan, 68(2) 514-514, Aug 26, 2013
27aXT-7 NMR study on a apical-fluorine si-layered high-T_c cuprates

Kimoto N., Iwai S., Shimizu S., Mukuda H., Kitaoka Y., Shirage P. M., Kito H., Iyo A., Tanaka K., Tokiwa K.

Meeting abstracts of the Physical Society of Japan, 68(1) 599-599, Mar 26, 2013
頂点フッ素系超伝導体Ba₂Ca₄Cu₅(O,F)_x単結晶の磁場中電気伝導度測定 II

田中勝大, 峯田恭平, 田辺健治, 田中康資, 伊豫彰, 常盤和靖

日本物理学会講演概要集, 68(1) 706, Mar 5, 2013

Books and Other Publications

リチウムイオン電池活物質の開発と電極材料技術

常盤和靖

サイエンス＆テクノロジー, Jan 30, 2014 (ISBN: 9784864280891)
超伝導分科会スクールテキスト高温超伝導体データブック

田中康資, 伊豫彰, 常盤和靖 (Role: Joint author)

社団法人応用物理学会, Mar 20, 2009

Presentations

128

角度分解光電子分光で解明する多層型銅酸化物超伝導体の反強磁性秩序と超伝導状態の関係

黒川輝風, 大久保卓, Z. Yang, 野村肇宏, 小濱芳允, 國定聡, 酒井志朗, 関根遼太郎, 鶴川智一, 菊川樹, C. Lin, 黒田健太, T. K. Kim, M. Wattson, C. Cacho, 辛埴, 遠山貴己, 常盤和靖, 近藤猛

日本物理学会, Mar 17, 2022
WO3薄膜の電界効果キャリアドーピングと熱電効果

清水直, 三輪一元, 岸朋哉, 大金剛毅, 常盤和靖, 小野新平

日本物理学会, Sep 22, 2021
溌液結晶化法で作製したCdTe単結晶の放射線特性

浅房大貴、関根遼太郎、上ノ町水紀、島添健次、高橋浩之、常盤和靖、長尾勝彦、櫻木史郎

応用物理学会春季学術講演会, Mar 18, 2021
2次元検出器を用いた逆格子マッピングによるTlBr結晶の評価

柴田崇明、大塚誠也、川田岳、関根遼太郎、上ノ町水紀、北島瑞希、島添健次、高橋浩之、櫻木史郎、常盤和靖

応用物理学会春季学術講演会, Mar 18, 2021
新規リン酸遷移金属(V,Cr,Fe)リチウム正極材料の高圧合成と電気化学特性

林聖人、垣添沙由実、土屋嶺、山下徳仁、関根遼太郎、常盤和靖、廣戸孝信、松下能孝

電気化学会第87回大会, Mar 19, 2020
レーザー角度分解光電子分光で解明する綺麗なCuO2面におけるモット絶縁体近傍の電子状態

黒川輝風, 磯野隼佑, 小濱芳允, 國定聡, 酒井志朗, 関根遼太郎, 大久保卓, 鶴川智一, 黒田健太, 辛埴, 遠山貴巳, 常盤和靖, 近藤猛

一般社団法人日本物理学会第75回年次大会, Mar 16, 2020
CuO2面の枚数に依存した多層型銅酸化物超伝導体の電子状態：レーザーARPESとdHvA効果による研究

黒川輝風, 磯野隼佑, 小濱芳允, 國定聡, 酒井志朗, 関根遼太郎, 大久保卓, 鶴川智一, 黒田健太, 辛埴, 遠山貴巳, 常盤和靖, 近藤猛

一般社団法人日本物理学会 2019年秋季大会, Sep 10, 2019
角度分解光電子分光で解明する銅酸化物高温超伝導体のモット絶縁相近傍の超伝導状態

國定聡, 磯野隼佑, 小濱芳允, 酒井志朗, C. Bareille, 足立伸太郎, 櫻木俊輔, 野口亮, 黒川輝風, 関根遼太郎, 黒田健太, T. Kim, C. Cacho, 遠山貴巳, 辛埴, 常盤和靖, 近藤猛

日本物理学会第74回年次大会, Mar 15, 2019
Au-Al-Tb系近似結晶の磁性

櫻井晶, 鈴木慎太郎, 藤井武則, 常盤和靖, 田村隆治

日本物理学会第74回年次大会, Mar 15, 2019
Characterization of CdTe single crystals prepared by the “Liquinert Processed” vertical Bridgman method

Ryotaro Sekine, Kazuyasu Tokiwa, Mizuki Uenomachi, Kenji Shimazoe, Hiroyuki Takahashi, Yoshiyuki Harada, Akira Fujimoto, Takeshi Hirai, and Shiro Sakuragi

2018 IEEE Nuclear Science Symposium and Medical Imaging Conference, Nov 16, 2018
レーザーARPESとdHvA効果で解明する五層型銅酸化物高温超伝導体の超伝導と反強磁性の関係

國定聡, 小濱芳允, 磯野隼佑, 酒井志朗, 足立伸太郎, Cedric Bareille, 関根遼太郎, 黒田健太, 常盤和靖, 辛埴, 近藤猛

日本物理学会 2018秋季大会, Sep 12, 2018
Au系Tsai型1/1近似結晶の単結晶作製と磁性

稲垣和樹, 石川明日香, 常盤和靖, 廣戸孝信, 藤井武則, 田村隆治

日本物理学会 2018年秋季大会, Sep 10, 2018
Au-SM-RE系1/1近似結晶の物性

服部将之, 石川明日香, 常盤和靖, 室裕司, 藤井武則, 田村隆治

日本物理学会 2018年秋季大会, Sep 10, 2018
Au-Al-Tb系近似結晶の作製と磁性II

櫻井晶, 石川明日香, 常盤和靖, 藤井武則, 田村隆治

日本物理学会 2018年秋季大会, Sep 10, 2018
単位格子中に5、6枚のCuO2面を持つ頂点フッ素系銅酸化物超伝導体の単結晶作製

磯野隼佑, 小宮山健太, 中山隼, 関根遼太郎, 常盤和靖

日本物理学会第73回年次大会, Mar 23, 2018
レーザーARPESで精密観測するBa2Ca4Cu5O10(F,O)2の超伝導状態

國定聡, 小濱芳允, 磯野隼佑, 足立伸太郎, C Bareille, 関根遼太郎, 黒田健太, 常盤和靖, 辛埴, 近藤猛

日本物理学会第73回年次大会, Mar 23, 2018
Au-Ga-Tb系1/1近似結晶の作製と磁性II

稲垣和樹, 石川明日香, 廣戸孝信A, 常盤和靖, 藤井武則, 田村隆治

日本物理学会第73回年次大会, Mar 23, 2018
ポイント接合型トンネル分光によるHgBa2Ca3Cu4O10.05における2種類の超伝導ギャップ

関根遼太郎, 中山隼, 束田昭雄, Saleem J. Denholme, 加瀬直樹, 宮川宣明, 常盤和靖

日本物理学会第73回年次大会, Mar 22, 2018
Na3M(PO4)2（M=遷移金属）の高圧合成と電気化学特性

中島拓哉, 北角真太朗, 山根昇, 松原稜, 垣内幸恵, 関根遼太郎, 常盤和靖

電気化学会第85回大会, Mar 9, 2018
STM/STS観測による5枚系及び6枚系頂点フッ素系銅酸化物超伝導体(F0245, F0256)におけるギャップの温度変化

杉本暁, 岩野雅俊, 磯野隼佑, 関根遼太郎, 常盤和靖, 浴野稔一

日本物理学会 2017年秋季大会, Sep 23, 2017

Research Projects

Synthesis of single crystals of cuprate superconductors with apical fluorine and study of CDW phase on CuO2 planes without apical oxygen

Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), Japan Society for the Promotion of Science, Apr, 2019 - Mar, 2022

Tokiwa Kazuyasu
機能性酸化物材料の開発と評価

2007 - 2016
Development and evaluation of functional oxide materials

2007 - 2016
New Quantum Phases of Matter in Multidimensional Environments

Grants-in-Aid for Scientific Research, Grant-in-Aid for Specially Promoted Research, Japan Society for the Promotion of Science, 2008 - 2012

KITAOKA Yoshio, MIYAKE Kazumasa, KIMURA Tsuyoshi, KISU Takayuki, IYO Akira, AKIMITSU Jun, OOSUMI Hiroyuki, TOKIWA Kazuyasu, OONUKI Yoshichika, YASHIMA Mitsuharu, MUKUDA Hidekazu
Fabrication of high performance thermoelectric module and preparation of strontium titanate for thermoelectric material

Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Japan Society for the Promotion of Science, 2007 - 2009

WATANABE Tsuneo, NISHIO Keishi, HAMADA Noriaki, IIDA Tsutomu, TOKIWA Kazuyasu
Tunneling study of high-T_C cuprates and the related materials, and the search for new (superconducting) materials

Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), Japan Society for the Promotion of Science, 2007 - 2008

MIYAKAWA Nobuaki, TOKIWA Kazuyasu

Industrial Property Rights

WO2005/027234 量子チューリング機械

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