YOSHIMATSU Kohei

J-GLOBAL         Last updated: Dec 20, 2018 at 17:24
 
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Name
YOSHIMATSU Kohei
Affiliation
Tohoku University
Section
Institute of Multidisciplinary Research for Advanced Materials Division of Organic- and Bio-materials Research
Research funding number
30711030

Research Areas

 
 

Academic & Professional Experience

 
Oct 2018
   
 
Lecturer, Multidisciplinary Research for Advanced Materials, Tohoku University
 
Apr 2016
 - 
Sep 2018
Assistant Professor, Department f Chemical Science and Engineering, Tokyo Institute of Technology
 
Apr 2013
 - 
Mar 2016
Assistant professor, Department of Applied Chemistry, Tokyo Institute of Technology
 
Apr 2012
 - 
Mar 2013
PD, JSPS research fellow
 
Apr 2009
 - 
Mar 2012
DC1, JSPS research fellow
 

Education

 
Apr 2009
 - 
Mar 2012
Department of Applied Chemistry, University of Tokyo
 
Apr 2007
 - 
Mar 2009
Department of Applied Chemistry, University of Tokyo
 
Apr 2003
 - 
Mar 2007
Department of Applied Chemistry, University of Tokyo
 

Awards & Honors

 
Jul 2017
Superconductivity in higher titanium oxides, Poster Award, 3rd Functional Oxide Thin Films for Advanced Energy and Information Technology Conference
 
Mar 2014
Fun Research Award, Funai Foundation
 
Jan 2014
Research Award, The Japan Society for Synchrotron Research
 
Jan 2012
Quantum well states of strongly correlated oxide of SrVO3, Presentation award for student, The Japan Society for Synchrotron Research
 
Sep 2015
Superconductivity of gamma-type Ti3O5, Presentation Award, The Japan Society of Applied Physics
 

Published Papers

 
Electronic properties across metal-insulator transition in β-pyrochlore-type CsW2O6 epitaxial films
Takuto Soma, Kohei Yoshimatsu, Koji Horiba, Hiroshi Kumigashira, and Akira Ohtomo
Physical Review Materials   2 115003-1-115003-8   Nov 2018   [Refereed]
Anisotropic Charge Distribution Induced by Spin Polarization in La0.6Sr0.4MnO3 Thin Films Studied by X-ray Magnetic Linear Dichroism
G. Shibata, K. Yoshimatsu, K. Ishigami, T. Harano, Y. Takahashi, S. Sakamoto, Y. Nonaka, T. Kadono, M. Furuse, S. Fuchino, M. Okano, J. Fujihira, A. Uchida, K. Watanabe, H. Fujihira, S. Fujihira, A. Tanaka, H. Kumigashira, T. Koide, and A. Fujimori
J. Phys. Soc. Jpn.   87 114713   Nov 2018   [Refereed]
Large anisotropic conductivity in Ti2O3 films
K. Yoshimatsu, H. Kurokawa, K. Horiba, H. Kumigashira, and A. Ohtomo
APL Materials   6 101101   Oct 2018   [Refereed]
Anisotropic spin-density distribution and magnetic anisotropy of strained La1−xSrxMnO3 thin films: angle-dependent x-ray magnetic circular dichroism
Goro Shibata,Miho Kitamura,Makoto Minohara,K. Yoshimatsu,Toshiharu Kadono,Keisuke Ishigami,Takayuki Harano,Yukio Takahashi,Shoya Sakamoto,Yosuke Nonaka,Keisuke Ikeda,Zhendong Chi,Mituho Furuse,Shuichiro Fuchino,Makoto Okano,Jun-ichi Fujihira,Akira Uchida,Kazunori Watanabe,Hideyuki Fujihira,Sei-ichi Fujihira,Arata Tanaka,Hiroshi Kumigashira,Tsuneharu Koide,Atsushi Fujimori
NPJ Quantum Materials      2018   [Refereed]
Band alignment at β-(AlxGa1-x)2O3/β-Ga2O3 (100) interface fabricated
Ryo Wakabayashi,Mai Hattori,Kohei Yoshimatsu,Koji Horiba,Hiroshi Kumigashira,Akira Ohtomo
Applied Physics Letters      2018
Masato Maitani,Takuya Yamada,Hisanori Mashiko,Kohei Yoshimatsu,Takayoshi OSHIMA,A. Ohtomo,Yuji Wada
   2017   [Refereed]
H. Kurokawa,K. Yoshimatsu,Osami Sakata,A. Ohtomo
Journal of Applied Physics      2017
Electronic structures and photoanodic properties of ilmenite-type MTiO3 epitaxial films (M = Mn, Fe, Co, Ni)
K. Yoshimatsu,Hisanori Mashiko,Naoto Umezawa,Koji Horiba,Hiroshi Kumigashira,A. Ohtomo
The Journal of Physical Chemistry C      2017
Nana Nishiyama,Hisanori Mashiko,K. Yoshimatsu,Koji Horiba,Hiroshi Kumigashira,A. Ohtomo
Thin Solid Films      2017
Ryo Wakabayashi,K. Yoshimatsu,Mai Hattori,A. Ohtomo
Applied Physics Letters      2017
Superconductivity in Ti4O7 and γ-Ti3O5 films
K. Yoshimatsu,Osami Sakata,A. Ohtomo
Scientific Reports      2017
Emergence of Quantum Critical Behavior in Metallic Quantum-Well States of Strongly Correlated Oxides
Masaki Kobayashi,K. Yoshimatsu,Taichi Mitsuhashi,Miho Kitamura,Enju Sakai,Ryu Yukawa,Makoto Minohara,Atsushi Fujimori,Koji Horiba,Hiroshi Kumigashira
Scientific Reports      2017
H. Mashiko,K. Yoshimatsu,T. Oshima,A. Ohtomo
The Journal of Physical Chemistry C      2016   [Refereed]
Isotropic Kink and Quasiparticle Excitations in the Three-Dimensional Perovskite Manganite La 0.6 Sr 0.4 MnO3
Koji Horiba,Miho Kitamura,Kohei Yoshimatsu,Makoto Minohara,Enju Sakai,Masaki Kobayashi,Atsushi Fujimori,Hiroshi Kumigashira
PHYSICAL REVIEW LETTERS      2016   [Refereed]
K. Yoshimatsu,Hirokazu Okabe,T. Oshima,S. Ueda,A. Ohtomo
Physics Review B      2016   [Refereed]
Kentarou Nakamura,H. Mashiko,K. Yoshimatsu,A. Ohtomo
Applied Physics Letters      2016   [Refereed]
Takuto Soma,K. Yoshimatsu,A. Ohtomo
Apllied Physics Express      2016   [Refereed]
K. Yoshimatsu,Takuto Soma,A. Ohtomo
Apllied Physics Express      2016   [Refereed]
Keisuke Watarai,K. Yoshimatsu,Koji Horiba,Hiroshi Kumigashira,Osami Sakata,A. Ohtomo
Journal of Physics: Condensed Matter      2016   [Refereed]
T. Oshima,R. Wakabayashi,M. Hattori,Akihiro Hashiguchi,Naoto Kawano,K. Sasaki,T. Masui,A. Kuramata,S. Yamakoshi,K. Yoshimatsu,A. Ohtomo,Toshiyuki Oishi,Makoto Kasu
Japanese Journal of Applied Physics      2016   [Refereed]

Conference Activities & Talks

 
Growth of group of IV hydride films using pulsed-laser deposition [Invited]
K. Yoshimatsu
The 4th Korea-Japan Joint Symposium on Hydrogen in Materials   15 Nov 2018   
酸化チタン系超伝導材料の創生と電子デバイス応用 [Invited]
吉松 公平
ファインケミカルジャパン2018   2018   
Modulation of Electronic Properties of Oxide Thin Films Using Electrochemical Reactions [Invited]
K. Yoshimatsu
The 7th Annual World Congress of Nano Science and Technology-2017 (Nano S&T-2017)   28 Nov 2017   
Epitaxial growth and physical properties of low-valence titanium oxide films [Invited]
K. Yoshimatsu
Collaborative Conference on Materials Research (CCMR) 2017   26 Jun 2017   
Superconductivity in higher titanium oxides
K. Yoshimatsu,O.Sakata,A.ohtomo
3rd Functional Oxide Thin Films for Advanced Energy and Information Technology Conference   2017   
高品質γ-Ti3O5薄膜の合成と超伝導特性 [Invited]
吉松 公平,坂田 修身,大友 明
第63回応用物理学会春季学術講演会   2016   
前周期遷移金属酸化物超伝導体の薄膜合成と制御 [Invited]
吉松 公平
第4回酸化物研究の新機軸に向けた学際討論会   2016   
γ-Ti3O5 薄膜の超伝導
吉松 公平,坂田 修身,大友 明
第76回応用物理学会秋季学術講演会   2015   
マグネリ相Ti酸化物薄膜の超伝導
吉松 公平,坂田 修身,大友 明
第76回応用物理学会秋季学術講演会   2015   
低原子価Ti系薄膜の合成と超伝導物性制御 [Invited]
吉松 公平
第52回化合物磁性材料研究会 薄膜新材料の合成・分光・理論   2015   
Synthesis and spectroscopic study on double-perovskite oxide thin films [Invited]
K. Yoshimatsu,K. Nogami,K. Watarai,H. Mashiko,E. Sakai,H. Kumigashira,O. Sakata,T. Oshima,A. Ohtomo
2014 Energy Materials Nanotechnology Open Access week   22 Sep 2014   
TiOx薄膜の合成と物性
吉松 公平,大島 孝仁,大友 明
第75回応用物理学会秋季学術講演会   2014   
放射光光電子分光法による強相関量子化状態の観測 [Invited]
吉松 公平
第27回日本放射光学会年会放射光科学合同シンポジウム 学会奨励賞受賞講演   2014   
Metallic quantum well states in artificial structures of strongly correlated oxide [Invited]
K. Yoshimatsu,H. Kumigashira
The 6th AOFSRR 2012   2013   
硬X線光電子分光によるSm1-xCaxNiO3薄膜の電子状態
吉松 公平,坂井 延寿,Xiang P. -H.,浅沼周太郎,山田浩之,澤彰仁,池永 英司,堀場弘司,尾嶋 正治,組頭 広志
第26回日本放射光学会年会放射光科学合同シンポジウム   2013   
Quantum confinement of strongly correlated electrons in oxide artificial structures [Invited]
K. Yoshimatsu
IMS Workshop on ASCM   2013   
Electronic and magnetic states of Co-doped Pr0.8Ca0.2MnO3
K. Yoshimatsu,H. Wadati,Takayuki Harada,Yukio Takahashi,Takayuki Harano,Goro Shibata,Keisuke Ishigami,Toshiharu Kadono,Tsuneharu Koide,M. Lippmaa,M. Oshima,A. Fujimori
2013 JSAP-MRS Joint Symposia   2013   
Electronic structures of hole-doped perovskite nickelate Sm1-xCaxNiO3 thin films studied by hard x-ray photoemission spectroscopy
K. Yoshimatsu,E. Sakai,P. -H. Xiang,S. Asanuma,H. Yamada,A. Sawa,E. Ikenaga,K. Horiba,Masaharu Oshima,H. Kumigashira
The 19th International Workshop on Oxides Electronics   2012   
酸化物量子井戸構造による強相関電子の量子閉じ込め [Invited]
吉松 公平,堀場 弘司,組頭 広志,吉田 鉄平,藤森 淳,尾嶋 正治
2012年秋季第73回応用物理学会学術講演会   2012   
Sm1-xCaxNiO3薄膜の硬X線光電子分光
吉松 公平,坂井 延寿,Xiang P. -H.,浅沼周太郎,山田浩之,澤彰仁,池永 英司,堀場弘司,尾嶋 正治,組頭 広志
日本物理学会2012年秋季大会   2012   
酸化物量子井戸構造による強相関電子の2次元閉じ込め
吉松 公平,堀場弘司,組頭 広志,吉田鉄平,藤森 淳,尾嶋 正治
2012年春季第59回応用物理学関係連合講演会   2012   
酸化物量子井戸構造における強相関電子の量子化状態 [Invited]
吉松 公平,堀場弘司,組頭 広志,吉田鉄平,藤森 淳,尾嶋 正治
第67回日本物理学会年次会   2012   
強相関酸化物 SrVO3 における量子井戸状態
吉松 公平,堀場 弘司,組頭 広志,吉田 鉄平,藤森 淳,尾嶋 正治
第25回日本放射光学会年会放射光科学合同シンポジウム   2012   
SrVO3の極薄膜化による低次元電子状態
吉松 公平,堀場弘司,組頭 広志,吉田鉄平,藤森 淳,尾嶋 正治
日本物理学会2011年秋季大会   2011   
Metal-insulator transition and two-dimensional electron liquid in SrVO3 ultrathin films [Invited]
K. Yoshimatsu,T. Okabe,H. Kumigashira,Satoshi Okamoto,S. Aizaki,A. Fujimori,M. Oshima
The 4th Indo-Japan Seminar   2011   
強相関酸化物薄膜における量子井戸状態
吉松 公平,堀場弘司,組頭 広志,吉田鉄平,藤森 淳,尾嶋 正治
第58回応用物理学関係連合講演会   2011   
Dimensional-crossover-driven metal-insulator transition in SrVO3 ultrathin films
K. Yoshimatsu, T. Okabe, H. Kumigashira, S. Okamoto, S. Aizaki, A. Fujimori, and M. Oshima
The 4th Indo-Japan Seminar   2011   
Fermi surface of SrRuO3 thin films studied by in situ soft x-ray angle-resolved photoemission spectroscopy
K. Yoshimatsu,E. Sakai,H. Kumigashira,A. Fujimori,M. Oshima
The 4th Indo-Japan Seminar   2011   
Metallic Quantum Well States in Artificial Structures of Strongly Correlated Oxide
K. Yoshimatsu,Koji Horiba,H. Kumigashira,Teppei Yoshida,A. Fujimori,M. Oshima
FIRST-QS2C WS on ”Emergent Phenomena of Correlated Materials”   2011   
SrRuO3薄膜のin situ角度分解光電子分光
吉松 公平,坂井延寿,組頭 広志,藤森 淳,尾嶋 正治
第24回日本放射光学会年会放射光科学合同シンポジウム   2011   
SrRuO3薄膜の軟X線角度分解光電子分光
吉松 公平,坂井延寿,組頭 広志,藤森 淳,尾嶋 正治
第66回日本物理学会年次大会   2010   
Fermi surface of SrRuO3 thin films studied by soft x-ray angle-resolved photoemission spectroscopy
K. Yoshimatsu,E. Sakai,H. Kumigashira,A. Fujimori,M. Oshima
The 17th International Workshop on Oxides Electronics   2010   
In situ angle-resolved photoemission study on SrRuO3 thin films
K. Yoshimatsu,H. Kumigashira,A. Fujimori,M. Oshima
VUVX2010   2010   
低次元化に伴い金属絶縁体転移を起こすSrVO3薄膜のin situ 放射光光電子分光
吉松 公平,岡部 崇志,組頭 広志,岡本敏史,相崎 真一,藤森 淳,尾嶋 正治
第23回日本放射光学会年会放射光科学合同シンポジウム   2010   
Bandwidth Controlled Metal-Insulator Transition in SrVO3 Thin Films
K. Yoshimatsu,T. Okabe,H. Kumigashira,S. Okamoto,S. Aizaki,A. Fujimori,M. Oshima
The 16th International Workshop on Oxides Electronics   2009   
低次元化によりバンド幅制御したSrVO3薄膜の電子状態
吉松 公平,岡部 崇志,組頭 広志,岡本 敏史,相崎 真一,藤森 淳,尾嶋 正治
第64回日本物理学会年次大会   2009   
Thickness dependent electronic structure of La0.6Sr0.4MnO3 layer in SrTiO3/La0.6Sr0.4MnO3/SrTiO3 heterostructures studied by hard x-ray photoemission spectroscopy
K. Yoshimatsu,K. Horiba,H. Kumigashira,E. Ikenaga,M. Oshima
AIST-RIKEN Joint WS on Emergent Phenomena of Correlated Materials""   2009   
終端制御SrTiO3/La0.6Sr0.4MnO3界面の硬X線光電子分光
吉松 公平,堀場 弘司,組頭 広志,池永 英司,尾嶋 正治
第22回日本放射光学会年会放射光科学合同シンポジウム   2009   
Dimensional crossover induced metal-insulator transition in SrVO3 studied by in situ photoemission spectroscopy
K. Yoshimatsu,T. Okabe,H. Kumigashira,S. Okamoto,S. Aizaki,A. Fujimori,M. Oshima
IWOX-VII   2009   
Electronic structure of the termination controlled SrTiO3/La0.6Sr0.4MnO3 interface studied by hard X-ray photoemission spectroscopy
K. Yoshimatsu,K. Horiba,H. Kumigashira,E. Ikenaga,M. Oshima
The 15th International Workshop on Oxides Electronics   2008   
終端制御SrTiO3/La0.6Sr0.4MnO3界面の硬X線光電子分光
吉松 公平,堀場弘司,組頭 広志,池永 英司,尾嶋 正治
第63回日本物理学会年次大会   2008   
上部界面を制御したSrTiO3/La0.6Sr0.4MnO3/SrTiO3構造の硬X線光電子分光
吉松 公平,堀場弘司,組頭 広志,池永 英司,尾嶋 正治
第56回春季応用物理学会学術講演会   2008   
LaAlO3/SrTiO3界面のin situ 放射光光電子分光
吉松 公平,安原 隆太郎,組頭 広志,尾嶋 正治
第21回日本放射光学会年会放射光科学合同シンポジウム   2008   
Electronic structure of the metallic interface between LaAlO3 and SrTiO3 studied by in situ photoemission spectroscopy
K. Yoshimatsu,R. Yasuhara,H. Kumigashira,M. Oshima
The 14th International Workshop on Oxides Electronics   2007   
LaAlO3/SrTiO3界面金属層のin situ 放射光光電子分光
吉松 公平,安原 隆太郎,組頭 広志,尾嶋 正治
第62回日本物理学会年次大会   2007   
Electronic structure at LaAlO3/SrTiO3 heterointerface studied by in situ photoemission spectroscopy
K. Yoshimatsu,R. Yasuhara,H. Kumigashira,M. Oshima
2007 CERC International Symposium   2007   
LaAlO3/SrTiO3界面電子状態の放射光光電子分光による解析
吉松 公平,安原 隆太郎,組頭 広志,尾嶋 正治
第54回春季応用物理学会学術講演会   2007   

Research Grants & Projects

 
Japan Society for the Promotion Science: Grant-in-Aid for Young Scientists (A)
Project Year: Apr 2016 - Mar 2019    Investigator(s): YOSHIMATSU Kohei
Japan Society for the Promotion Science: Grant-in-Aid for Research Activity Start-up
Project Year: Apr 2013 - Mar 2015    Investigator(s): YOSHIMATSU Kohei
Japan Society for the Promotion Science: JSPS Research Fellowship for Young Scientists (DC1)
Project Year: Apr 2012 - Mar 2013    Investigator(s): YOSHIMATSU Kohei
Japan Society for the Promotion of Science: JSPS Research Fellowship for Young Scientists (DC1)
Project Year: Apr 2009 - Mar 2012    Investigator(s): YOSHIMATSU Kohei

Social Contribution

 
TIT observes SC in Thin Films of Titanium Oxide
[Media coverage cooperation]  Superconductor Week  Superconductor Week  30 Nov 2017 - 30 Nov 2017