日本語
The University of Electro-Communications 
Graduate School of Informatics and Engineering, School of Informatics and Engineering 
Division of General Education 

Associate Professor 
Nobuhito KOKUBO 

Personal website  

Career
Leiden University, Kamerlingh Onnes Laboratory  客員研究員  1999/10/01-2001/09/30 
Leiden University, Kamerlingh Onnes Laboratory  博士研究員  2001/10/01-2003/09/30 
University of Tsukuba, Institute of Materials Science  Assistant Professor  2003/10/01-2004/03/31 
University of Tsukuba, Institute of Materials Science  Assistant Professor  2004/04/01-2006/04/30 
Kyushu University, Center for Research and Advancement in Higher Education  Assistant Professor  2006/05/01-2006/05/31 
Kyushu University, Center for Research and Advancement in Higher Education  Assistant Professor  2006/06/01-2007/03/31 
Kyushu University, Center for Research and Advancement in Higher Education  Assistant Professor  2007/04/01-2011/08/31 
電気通信大学情報理工学部  准教授  2011/09/01-Present 
電気通信大学大学院情報理工学研究科  准教授  2012/01/01-Present 

Academic background
Tokyo Institute of Technology  Graduate School, Division of Science and Engineering  物理学専攻  Doctoral program  1998/03  Completed 

Academic degrees
修士(理学)  Tokyo Institute of Technology  1995/03 
博士(理学)  東京工業大学  1998/03 

Classes responsible within the university
2019  固体物理工学第一  Spring semester  Undergraduate, daytime 
2019  大学院輪講第一(I)(S専攻)  Spring semester  Graduate, IE  Master's program 
2019  輪講A  Spring semester  Undergraduate, daytime 
2019  物理学演習第一  Spring semester  Undergraduate, daytime 
2019  卒業研究A  Spring semester  Undergraduate, daytime 
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Current research areas
Condensed matter physics II 

Current research subjects
幾何学的に閉じ込められた磁束量子状態  第2種超伝導体、磁束量子、メゾスコピック系  2011/04/01-2015/03/31 
超伝導量子渦ビットの創出  2014/04/01-2017/03/31 
微小超伝導体の反量子渦状態と制御  2014/04/01-Present 
ナノピペットを利用した超伝導ナノセンシング技術の開発  超伝導量子干渉計、ナノピペット、磁気顕微鏡  2020/03/11-Present 

Published books
Book  超伝導磁束状態の物理  小久保伸人  裳華房  2017/04/05  978-4-7853-2922-8 
Book  The Oxford Handbook of Small Superconductors  Nobuhito Kokubo, Satoru Okayasu, Kazuo Kadowaki  Oxford University Press  81-107  2017/01  9780198738169 
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Published papers
Paper  Yes  Finite-size effect of critical penetration of Pearl vortices in narrow superconducting flat rings  Joint  N. Kokubo, S. Okayasu, and T. Nojima  Journal of Applied Physics  125, 223906-1-223906-6  2019/06/14  10.1063/1.5100497 
Paper  Yes  Vortex shells in mesoscopic triangles of amorphous superconducting thin films  Joint  N. Kokubo, H. Miyahara, S. Okayasu, T. Nojima  Physica C  532  2016/11  10.1016/j.physc.2016.05.009 
Paper  Yes  Equilibrium and Dynamic Vortex States near Absolute Zero in a Weak Pinning Amorphous Film  Joint  Aguri Ochi, Naoya Sohara, Shin-ichi Kaneko, Nobuhito Kokubo, and Satoshi Okuma  Journal of the Physical Society of Japan  85/ 4, 044701-1-044701-7  2016/03/02  10.7566/JPSJ.85.044701 
Paper  Yes  Dynamic Melting of Driven Abrikosov Lattices in an Amorphous MoxGe1−x Film in Tilted Field  Joint  Aguri Ochi, Yasuki Kawamura, Toshiki Inoue, Tetsuya Kaji, Dobroka Mihaly, Shin-ichi Kaneko, Nobuhito Kokubo, Satoshi Okuma  Journal of the Physical Society of Japan  85/ 3, 034712-1-034712-6  2016/02/12  10.7566/JPSJ.85.034712 
Paper  Yes  Commensurate and incommensurate Vortex States Confined in Mesoscopic Triangles of Weak Pinning Superconducting Thin Films  Joint  N. Kokubo, H. Miyahara, S. Okayasu, and T. Nojima   Journal of the Physical Society of Japan  83/ 9, 043704-1-043704-04  2015/03/12  10.7566/JPSJ.84.043704 
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Research presentations
Oral presentation for an academic conference  超伝導熱・磁気顕微鏡の開発を目指して  ワークショップ「ナノ構造超伝導体における渦糸状態  No  小久保伸人  2019/06/02 
Oral presentation for an academic conference  領域6、4 合同シンポジウム「量子磁束の構造と制御による超伝導位相物理の構築」 微小超伝導体における量子化磁束状態  日本物理学会2018年秋季大会  10pB102-2  No  小久保伸人  2018/09/10 
Oral presentation for an academic conference  Manipulation of Fluxon States in Microstructured Superconducting Thin Films  10 th international conference on vortex matter in nanostructured superconductors (Vortex X)  No  Nobuhito Kokubo, Satoru Okayasu, Tsutomu Nojima, Takahiko Sasaki  2017/09/13 
Oral presentation for an academic conference  Flux-flow instability in cleaved thin films of 2H-NbSe2 single crystals  The 28th International Conference on Low Temperature Physics  Yes  J. Yoshida, H.Ando, N. Kokubo  2017/08/10  URL 
Oral presentation for an academic conference  Observation of flux states and interstitial vortices in perforated mesoscopic squares of amorphous superconducting films  The 28th International Conference on Low Temperature Physics  Yes  M Mitsuishi,K. Kitano,N. Kokubo,S. Okayasu,T. Nojima, T. Sasaki:  2017/08/10  URL 
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Awards
Second Prize in the Poster Competition, (International Conference on Nanoscience and Engineering in Superconductivity)  2009/03 
Second Prize in the Poster Competition, Joint ESF and JSPS Conference on “Vortex Matter in Superconductors IV”  2005/09 
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Public lectures
サイエンスドリーム(才能を育てる体験学習)  世田谷区教育委員会  2011/01/19  電気通信大学 
福岡県高校生科学教育推進事業能力アップ講座スーパーサイエンスセミナー  福岡県教員委員会  2006/08  九州大学 
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Memberships of academic societies
日本物理学会 
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Involvement in conference and research meetings
日本物理学会第74回年次大会(2019年)  領域6 超伝導セッション 座長  2019/03/15 
第26回渦糸物理国内会議  主催  2018/12/03 
The Fifth MIPT – UEC – LPI International Workshop on Atomic, Molecular and Optical Physics  Session Chairman  2018/10/02 
日本物理学会2018年秋季大会  領域6 超伝導セッション 座長  2018/09/09 
新規超伝導体・ナノ構造超伝導体における渦糸物理  座長  2018/02/24 
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Committee or council involvement
日本物理学会  領域世話人(領域6)  2009/05-2010/04 
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Committee activity in the University
テニュア・トラック助教人事  委員  2017/06-Present 
H29年度 類・専門教育プログラム配属検討WG  委員  2017/05-Present 
単位認定小委員会  委員  2017/04-2018/03 
単位認定小委員会  委員  2016/04-2017/03 
共通教育部 教務委員(部内教育委員)  委員  2013/04-2014/03 
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