Details of a Researcher - Matoba, Masanori

Matoba, Masanori

写真a

Affiliation: Faculty of Science and Technology, Department of Applied Physics and Physico-Informatics ( Yagami )

Position: Professor

External Links

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Career 【 Display / hide 】

1990.04

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1995.03

慶應義塾大学理工学部応用化学科, 助手
1994.10

-

1995.03

通産省工業技術院電子技術総合研究所電子基礎部電子物性研究室, 招聘研究員
1995.04

-

1997.03

慶應義塾大学理工学部応用化学科, 専任講師
1996.04

-

1997.03

グローニンゲン大学（オランダ）物質科学センター, 客員研究員
1997.04

-

1998.03

慶應義塾大学理工学部物理情報工学科, 専任講師

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Academic Background 【 Display / hide 】

1981.04

-

1985.03

Keio University, Faculty of Science and Technology, Department of Applied Chemistry

University, Graduated
1985.04

-

1987.03

Keio University, Graduate School of Science and Technology, Applied Chemistry

Graduate School, Completed, Master's course
1987.04

-

1990.03

Keio University, Graduate School of Science and Technology, Applied Chemistry

Graduate School, Withdrawal after completion of doctoral course requirements, Doctoral course

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Academic Degrees 【 Display / hide 】

博士(工学), Keio University, Dissertation, 1994.06

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Research Areas 【 Display / hide 】

Natural Science / Magnetism, superconductivity and strongly correlated systems (Solid State Physics)
Exploratory Materials Physics
Materials Design
Strongly Correlated Electron Physics

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Books 【 Display / hide 】

連続シンポジウム報告書「さまざまな分野に広がるトラスト研究、総合知による取り組みへ（１）～フェイク問題、医療AI、安全保障とトラスト～」

福島俊一, 青木孝, 尾崎翔, 高島洋典, 平池龍一, 福井章人, 的場正憲, 茂木強, 吉脇理雄, 木村康則, 2025.03

, Accepted
戦略プロポーザル「社会課題解決に向けた量子マテリアルの活用戦略」

鈴井伸郎, 魚見和久, 大淵真理, 佐藤隆博, 曽根純一, 馬場寿夫, 眞子隆志, 宮下哲, 八巻徹也, 的場正憲, 鈴木和拓, 赤崎寿樹, 阿部一英, 魚崎浩平, 2025.03

, Accepted
俯瞰セミナー&ワークショップ報告書「人・AI共生社会のための基盤技術」

福島俊一, 青木孝, 尾崎翔, 高島洋典, 平池龍一, 福井章人, 的場正憲, 茂木強, 木村康則, 2025.03

, Accepted
科学技術未来戦略ワークショップ報告書「量子マテリアル活用基盤技術の創出」

鈴井伸郎, 魚見和久, 大淵真理, 佐藤隆博, 曽根純一, 馬場寿夫, 眞子隆志, 宮下哲, 八巻徹也, 的場正憲, 鈴木和拓, 赤崎寿樹, 阿部一英, 魚崎浩平, 2024.12

, Accepted
研究開発の俯瞰報告書「システム・情報科学技術分野（2024年）」

木村康則, 青木孝, 市川類, 尾崎翔, 嶋田義皓, 高島洋典, 寺西裕一, 平池龍一, 福井章人, 福島俊一, 的場正憲, 茂木強, 吉脇理雄, 合原一幸, 淺間一, 喜連川優, 後藤厚宏, 竹内健, 田中健一, 徳田英幸, 西村秀和, 森川博之, 山口高平, 吉濱佐知子, 若山正人 , 2024.09

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Papers 【 Display / hide 】

Thermal Transport Properties of a Mixed Anion Layered Compound, Polycrystalline LaCu_1-δS_0.5Se_0.5O (δ = 0.01)

Nobuhiko Azuma, Hiroki Sawada, Hirotaka Ito, Ryosuke Sakagami, Yuya Tanaka, Tatsuhide Fujioka, Masanori Matoba, and Yoichi Kamihara

Korean Journal of Materials Research 34 ( 10 ) 464 - 474 2024.10

Research paper (scientific journal), Joint Work, Accepted, ISSN 12250562

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Electrical and thermal transport properties of a polycrystalline carrier-doped wide-gap semiconductor LaCu<inf>1-</inf>δ S<inf>0.5</inf>Se<inf>0.5</inf>O (δ = 0.01), in which the CuCh (Ch = S, Se) layer works as conducting layer, were measured at temperatures 473~673 K. The presence of δ = 0.01 copper defects dramatically reduces the electrical resistivity (ρ) to approximately one part per million compared to that of δ = 0 at room temperature. The polycrystalline δ = 0.01 sample exhibited ρ of 1.3 × 10-3 Ωm, thermal conductivity of 6.0 Wm-1 K-1, and Seebeck coefficient (S) of 87 µVK-1 at 673 K. The maximum value of the dimensionless figure of merit (ZT) of the δ = 0.01 sample was calculated to be 6.4 × 10-4 at T = 673 K. The ZT value is far smaller than a ZT ~ 0.01 measured for a nominal LaCuSeO sample. The smaller ZT is mainly due to the small S measured for LaCu<inf>1-δ</inf>S<inf>0.5</inf>Se<inf>0.5</inf>O (δ = 0.01). According to the Debye model, above 300 K phonon thermal conductivity in a pure lattice is inversely proportional to T, while thermal conductivity of the δ = 0.01 sample increases with increasing T.
- Access to Document (DOI)
水素雰囲気下熱処理およびヒドリドドープ下のY_0.77Gd_0.23Ba₂Cu₃O_7-δ薄膜の結晶相安定性

浪田秀郎, 佐藤弘之, 的場正憲, 岩崎秀, 藤岡正弥,原由子, 原田工夢, 三浦正志, 神原陽一

材料の科学と工学 61 113 - 118 2024.06

Research paper (scientific journal), Joint Work, Accepted

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有機金属堆積法を用いてY0.77Gd0.23Ba2Cu3O7-delta ((Y,Gd)BCO) をSrTiO3基板上に成長させた薄膜試料を用意した. これらの試料を水素雰囲気下, および水素負イオン照射下で熱処理を行い, その結晶相の安定性を評価した. いずれの熱処理条件でも300℃の熱処理では(Y,Gd)BCOの結晶相は消失した. アンダードープY,Gd)BCOでは250℃の熱処理でも(Y,Gd)BCOの結晶相が維持された.
200℃のいずれの熱処理条件でも、試料回収後の室温での格子定数cが増加した. 210℃での水素負イオン照射下熱処理を施した試料のc軸長は減少した. 210℃での水素雰囲気下熱処理試料の格子定数は, 同様にcが像がした. これに対し210℃での水素負イオン照射下熱処理を施した試料のc軸長は減少した.
複合アニオン層状化合物 LaCu_1-δS_0.5Se_0.5O (δ ~ 0.01) 多結晶縮退半導体の光学バンドギャップ内構造

東伸彦, 澤田拓希, 伊藤大平, 坂上良介, 的場正憲, 臼井秀知, 神原陽一

材料の科学と工学 58 ( 2 ) 22 - 26 2021.04

Research paper (scientific journal), Joint Work, Accepted
Thermoelectric transport properties of the van der Waals-type layered rhombohedral SnAs-based compound, EuSn₂As₂

Ryosuke Sakagami, Yosuke Goto, Harunari Karimata, Nobuhiko Azuma, Michitaro Yamaguchi, Suguru Iwasaki, Manami Nakanishi, Itsuki Kitawaki, Yoshikazu Mizuguchi, Masanori Matoba, Yoichi Kamihara

Japanese Journal of Applied Physics 60 ( 3 ) 2021.03

Research paper (scientific journal), Joint Work, Accepted, ISSN 00214922

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The thermoelectric transport properties of the van der Waals-type layered rhombohedral SnAs-based compound, EuSn2As2, have been investigated. A densified polycrystalline sample of EuSn2As2 with porosity (φ) of 2.4(9) vol.% exhibited a weak orientation to the c-axis for hexagonal coordination system; the weak orientation is parallel (P ∥) to the pressing direction of hot pressing. Measurements of electrical resistivity (ρ), Seebeck coefficient (S), and thermal conductivity (κ) were conducted perpendicular (P ⊥) to the pressing direction. The experimental values of ρ and S exhibit metallic temperature dependence and p-type carrier polarity. The power factor (P) was 0.51(8) mW m-1 K-2 at 673(4) K. Using the Wiedemann-Franz-Lorenz law, the phonon thermal conductivity (κ ph) was estimated to be 0.4(6) W m-1 K-1 at 673(6) K. The dimensionless figure of merit, ZT, was 0.092(17) at 673(3) K.
- Access to Document (DOI)
Proposal of disruptive computing (A computing-domain-oriented approach)

T. Baba, Y. Shimada, S. Kawamura, M. Matoba, T. Fukushima, S. Fujii, T. Nagano, Y. Katsumata, N. Kochi, Y. Kimura

Japanese Journal of Applied Physics 59 ( 5 ) 050503-1 - 050503-13 2020.05

Research paper (scientific journal), Joint Work, Accepted, ISSN 00214922

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The advanced data processing on the edge devices is getting much attention in addition to the performance of cloud computing for big data analysis and artificial intelligence for the advanced cyber-physical systems and Internet of Things. This paper shows the challenges of research and development on disruptive computing which enhance the conventional computing system with high performance and low power consumption. Future R&D challenges in computing technologies involve all technology layers including algorithms, packaging, software, architecture, circuits, devices, and materials. It is important from the perspective of social implementation and efficiency to select technologies suitable for important applications from each technology layer specific to the computing domain and with consideration for the timeline, and to develop technologies through a vertical integration approach. The promoting method of implementing such R&D is also described.
- Access to Document (DOI)

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Papers, etc., Registered in KOARA 【 Display / hide 】

Exploring quantum functions in new strongly correlated electronic systems with quantum entanglement

Matoba, Masanori

学事振興資金研究成果実績報告書 (慶應義塾大学) 2017
Quantum critical state and electronic structure of two-dimensional Kondo lattice

Matoba, Masanori

科学研究費補助金研究成果報告書 2016

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Reviews, Commentaries, etc. 【 Display / hide 】

邂逅と創発の軌跡―量子機能Xをめぐる知の旅路

的場正憲

まぐね (日本磁気学会) 20 ( 5 ) 177 - 178 2025.10

Article, review, commentary, editorial, etc. (scientific journal), Single Work, Lead author, Last author, Corresponding author

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論説として、量子2.0時代の「量子機能X」の創発を目指す量子マテリアル設計への挑戦を論じた。特に、慶應義塾大学での研究指導の中で、鉄系高温超伝導体を発見した神原陽一氏（研究室1期生）との運命的な邂逅を紹介するとともに、データから未来を拓く「叡智（ウィズダム）」を見出す探求の重要性を提言し、若き挑戦者への期待を込めた結語としている。
安西修一郎先生を偲んで

的場正憲

三田評論 (慶應義塾大学出版会) 2025年 ( 第1301 ) 123 - 123 2025.07

Single Work, Lead author, Last author, Corresponding author
CRDS 量子だより Vol.10「量子未来社会の先導者」

的場正憲

量子ICTフォーラムメールマガジン 30 2023.10

Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media), Lead author, Last author, Corresponding author
科学技術の潮流（50）知のコンピューティング　一聞き十知り百語る

的場正憲

日刊工業新聞 ( 2020年4月10日 ) 2020.04

Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media), Single Work, Lead author, Last author, Corresponding author
森羅万象に潜む叡智(えいち) を求めて　～「知のコンピューティング」の挑戦～

的場正憲

つくばサイエンスニュース ( 2019年5月1日 ) 2019.05

Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media), Single Work, Lead author, Last author, Corresponding author

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Presentations 【 Display / hide 】

Superconducting Properties for a Cuprate Superconductor after Heat Treatments under Several Hydrogen Atmosphere at ~200 deg. C

Hideo Namita, Masanori Matoba, Suguru Iwasaki, Masaya Fujioka, Masashi Miura, Yoichi Kamihara

[International presentation] Materials Research Meeting (MRM) 2025,

2025.12
,
Oral presentation (general)

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金属有機化合物分解法によりSrTiO3基板上に作製されたGdをYサイトに部分置換されたYBCO ((Y, Gd)BCO) 薄膜を100℃から300℃で水素雰囲気下で熱処理を行った。また、この熱処理中に、水素負イオンのバイアスによる注入の有無による結晶相の変化を調べた。210℃で水素負イオンのバイアスによる注入を施した試料のみが、頂点酸素に水素負イオン(ヒドリド)が置換されると仮定した密度汎関数理論による電子状態計算結果と矛盾しない格子定数の減少を示す。
Introduction of slab structures and calculations of surface energy of Bi₂Sr₂CaCu₂O_8+x

Ryotaro Taniguchi, Haruyoshi Suzuki, Yoichi Kamihara, Masanori Matoba

[International presentation] Materials Research Meeting (MRM) 2025,

2025.12
,
Poster presentation

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剥離性を有する銅酸化物高温超伝導体Bi2Sr2CaCu2O8+x (Bi-2212)の表面エネルギーをスラブ構造を仮定して評価する.
Computational Chemical Analysis of Oxygen deficiency in Synthesized Samples of Mixed Anion Layered Compound Superconductor, LaNiPO_1−δ

Haruyoshi Suzuki, Daiki Fujii, Aurélien Antunez, Yoichi Kamihara, Masanori Matoba

[International presentation] Materials Research Meeting (MRM) 2025,

2025.12
,
Poster presentation

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複合アニオン層状化合物の一種である超伝導を示すLaNiPO1−deltaを合成と電子状態計算を用いて研究する。酸素欠損量とTcとの相関を密度汎関数理論に基づく電子状態計算シミュレーションの結果と比較し、検討する。
New Synthesis Route for Polycrystalline Samples and Chemical Calculation in Superconducting LaNiPO

Haruyoshi Suzuki, Ryoma Takeuchi, Daiki Fujii, Aurelien Antunez, Yoichi Kamihara,Masanori Matoba

[International presentation] 30th International Conference on Low Temperature Physics (LT30) (Bilbao, Spain) ,

2025.08
,
Poster presentation

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複合アニオン層状化合物の一種である鉄系高温超伝導体と類似の構造をもつニッケル複合アニオン層状化合物を、新たな合成経路で得た。
Exploration of transparent semiconductor by synthesis of Sr₂CuZnSO_3−δ

Daiki Fujii, Haruyoshi Suzuki, K. Fukuda, Yoichi Kamihara, Masanori Matoba

[International presentation] The 10th Japan-Korea International Symposium on Materials Science and Technology (JKMST2025) ,

2025.07
,
Poster presentation

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新規な複合アニオン層状化合物透明半導体Sr2CuZnSO3-deltaの合成を報告する。

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Research Projects of Competitive Funds, etc. 【 Display / hide 】

Quantum critical state and electronic structure of two-dimensional Kondo lattice

2014.04

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2017.03

MEXT,JSPS, Grant-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), Principal investigator

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We have studied Cr-doping effects on the suppressed magnetism and the electronic structure of quasi-2D layered oxypnictide CeFePO with alternating stack of Ce2O2 and Fe2P2 layers to find two quantum critical points (Cr5%, Cr45%) and reveal novel Kondo lattice picture as follows.
The increasing phenomena of the electronic specific heat of CeFePO indicates that the existence of the Kondo singlet was confirmed below 12 K (Kondo temperature). On the other hand, in Cr20%, the appearance of the ferromagnetic transition, the decrease with remarkable electronic thermal capacity and the Kondo breakdown phenomenon are observed below 6 K. Also, the increase of the magnetic phase transition temperature due to applied magnetic field is confirmed, indicating the existence of the ferromagnetic fluctuation in Cr20%. Moreover, from the 57Fe Mossbauer spectrum analysis of Cr50%, it is expected that Fe spin states change into a spin density wave (SDW) below 25 K.

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Works 【 Display / hide 】

大学と地域との連携を考える

MATOBA MASANORI

2010.03
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Other, Single

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Intellectual Property Rights, etc. 【 Display / hide 】

混合アニオン化合物鉄系超電導導体とその製造方法

Date applied： 2016-191311 2016.09

Date announced： 2018-055975 2018.04

Patent, Joint
層状ビスマスカルコゲナイド系熱電変換材料及びその製造方法

Date applied： 2015-168193 2015.08

Date announced： 2016-058725 (P2016-58725A) 2016.04

Patent, Joint

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Awards 【 Display / hide 】

Best presentation award

Yutaro Yamada, Ryosuke Sakagami, Masanori Matoba, and Yoichi Kamihara, 2022.11, The Materials Research Society of Korea, Thin film preparation and Raman spectroscopy of EuSn₂As₂

Type of Award： Award from international society, conference, symposium, etc.
2019年度日本材料科学会論文賞

中西愛, 木下拓郎, 的場正憲, 神原陽一, 2019.05, 一般社団法人日本材料科学会, アンモニア合成新触媒Ru担持[Ca₂₄Al₂₈O₆₄]^4-(e^-)₄の表面再構成予測

Type of Award： Honored in official journal of a scientific society, scientific journal

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受賞理由：「アンモニア合成新触媒Ru担持[Ca24Al28O64]4+(e-)4の表面再構成予測」を材料の科学と工学の進歩発展に貢献するものと認められたことによる。
Best Presentation Awards (Poster)

Manami Nakanishi, Masanori Matoba, and Yoichi Kamihara, 2018.11, The Materials Science Society of Japan, Electrical structure and thermal properties of ZrCuSiAs type mixed anion layered compounds

Type of Award： Award from international society, conference, symposium, etc.
日本材料科学会功労賞

的場正憲, 2013.06

Type of Award： Award from Japanese society, conference, symposium, etc.
熱電変換シンポジウム2000(TEC2000)研究優秀賞

岡部博孝, 的場正憲, 2000.07, 熱電変換研究会(現日本熱電変換学会), 擬1次元強相関電子材料の熱電特性

Type of Award： Award from Japanese society, conference, symposium, etc.