Research field (2)：
Mathematical physics and basic theory
, Magnetism, superconductivity, and strongly correlated systems
Research keywords (5)：
Heavy-fermion systems
, First-principles calculations
, High-temperture superconductivity
, Strongly correlated electron systems
, Theoretical solid state physics
Research theme for competitive and other funds (38)：
2016 - 現在 多バンド系における新奇励起子相の理論
2013 - 現在 多バンド系における高温超伝導機構
2008 - 現在 鉄系高温超伝導の発現機構
1999 - 現在 強結合電子フォノン系の理論
1988 - 現在 強相関電子系の理論
1986 - 現在 低次元電子系の理論
2021 - 2024 Strong correlation and strong coupling effects in the excitonic phase and its vicinity region based on the first-principles calculations and the quantum many-body calculations
2019 - 2023 第一原理計算による表面・界面系での高温超伝導
2019 - 2022 Novel fact on the mechanisms of high-temperature superconductivity
2005 - 2006 The study on the superconductive properties of the Pr-based cuprates with quasi-one-dimensional CuO double chains
2002 - 2005 モット転移近傍におけるフォノン、軌道、乱れの効果
2000 - 2002 Theoretical Study of Anomalous Metallic Propertices of Strongly Coupled Electrons.
1999 - 2001 モット転移近傍における局所相関とサイト間相関
2000 - 2001 モット転移点近傍の異常金属の理論研究
1998 - 2001 Study on Magnetism and Suprconductivity in the Non-Fermi Liquid with Channels
1996 - 1998 Theoretical Study of Transport Phenomena based on Mori Formula
1996 - 1997 I/N展開法と数値対角化法を相補的に用いた無限大次元の強相関電子系の研究
1995 - 1996 重い電子系のメタ磁性の理論
1996 - 1996 重い電子形成と物質異常
1995 - 1995 重い電子形成と物性異常
1993 - 1995 Spin Density and Quantum Fluctuations in Quasi-One-Dimensional Conductors
1993 - 1994 近藤絶縁体の理論
1994 - 1994 温度低下に伴う重い電子の形成と超伝導
1991 - 1993 Theoretical Study on Charge Fluctuation in Strongly Correlated Electrons
1990 - 1991 強い相関のある電子系の電子状態および超伝導機構に関する理論
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Papers (123)：
Takuya Sekikawa, Jeffery L. Tallon, Shen V. Chong, Yoshiaki Ōno. Electronic Structure of a Layered Organic-Inorganic Hybrid Material (WO3)2(4,4′-bipyridyl) Based on the First-principles Calculation. Journal of the Physical Society of Japan. 2023. 92. 2. 023702-1-023702-4
Takuya Sekikawa, Hiroyuki Kawai, Yoshiaki Ōno. Surface electronic structure of possible high-Tc surface superconductor WO3 based on the first-principles calculation. Journal of Physics: Conference Series. 2022. 2323. 1. 012006-1-012006-4
Takehiro Teramura, Michiaki Matsukawa, Tatsuya Senzaki, Haruka Taniguchi, Kazuhiro Sano, Yoshiaki Ōno, Makoto Hagiwara. Structure, electric transport, and magneto-transport properties of metallic double-chain based PrBa2Cu4O8 with low Ca substitution. Physica B: Condensed Matter. 2022. 646. 414226-1-414226-8
Yuto Iizuka, Takemi Yamada, Katsurou Hanzawa, Yoshiaki Ōno. First-Principles Study of the RKKY Interaction and the Quadrupole Order in the Pr 1-2-20 Systems PrT2Al20 (T = Ti, V). Journal of the Physical Society of Japan. 2022. 91. 7. 074708-1-074708-6
Takuya Sekikawa, Yoshiaki Ōno. Phase diagram of the three-orbital Hubbard-Holstein model simulating Superconducting Tungsten Bronze AxWO3. Journal of Physics: Conference Series. 2022. 2164. 1. 012012-1-012012-4
Sekikawa Takuya, Nagashima Kazuki, Zhang Guozhu, Yanagida Takeshi, Ono Yoshiaki. First principles calculation of WO3 nanowire electric state and superconductivity II. JSAP Annual Meetings Extended Abstracts. 2021. 2021.1. 1604-1604
Sekikawa Takuya, Watabe Rai, Ishizuka Jun, Nitta Yoshihiro, Sano Kazuhiro, Ono Yoshiaki. First-Principles Study and Orbital-Fluctuation Effect on the Tungsten Bronze AxWO3 Superconductivity. Meeting Abstracts of the Physical Society of Japan. 2019. 74.2. 1672-1672
Ogata K., Yamada T., Ishizuka J., Ono Y. 9aPS-58 The effect of AB intersite d-p orbital correlation in A15 compound (A_3B). Meeting abstracts of the Physical Society of Japan. 2014. 69. 2. 416-416
