Updated on 2024/04/20
博士（理学） ( 1997.9 東京理科大学 )
Niigata University Faculty of Engineering Professor
2016.4
Country：Japan
The University of Tokyo The Institute for Solid State Physics
2016.3
Country：Japan
Hanyang University Department of Physics Associate Professor
2013.3 - 2016.2
Country：Korea, Republic of
Asia Pacific Center for Theoretical Physics Junior Research Group Leader
2009.7 - 2013.2
Country：Korea, Republic of
Asia Pacific Center for Theoretical Physics post-doc
2009.4 - 2009.6
Country：Korea, Republic of
Max Planck Institute for Physics of Complex Systems post-doc
2009.3
Country：Germany
Max Planck Institute for Chemical Physics of Solids post-doc
2006.9 - 2009.2
Country：Germany
Osaka University Graduate School of Engineering Science
2006.4 - 2006.8
Country：Japan
Kobe University Faculty of Science Department of Physics
2004.4 - 2006.3
Country：Japan
日本原子力研究所 先端基礎研究センター 博士研究員
2001.4 - 2004.3
Country：Japan
電子技術総合研究所 超伝導ラボ 特別技術補助職員
2001.1 - 2001.3
Country：Japan
電子技術総合研究所 超伝導ラボ 客員研究員
2000.10 - 2000.12
Country：Japan
電子技術総合研究所 超伝導ラボ 科学技術特別研究員
1997.10 - 2000.9
Niigata University Faculty of Engineering Department of Engineering Professor
2017.4
Niigata University Abolition organization Applied Material Science Professor
2016.4 - 2017.3
Tokyo University of Science Graduate School of Science and Technology 物理学専攻
1994.4 - 1997.9
Tokyo University of Science Graduate School of Science and Technology 物理学専攻
1992.4 - 1994.3
Tokyo University of Science Faculty of Science and Technology Physics
- 1992.3
Country： Japan
Emergent rank-5 nematic order in URu2Si2 Reviewed
H. Ikeda, M.-T. Suzuki, R. Arita, T. Takimoto, T. Shibauchi, Y. Matsuda
Nature Physics 8 528 - 533 2012.7
SmB6: A promising candidate for a topological insulator Reviewed
T. Takimoto
Journal of Physical Society of Japan 80 ( 12 ) 123710-1 - 123710-4 2011.12
Antiferro- hexadecapole scenario for metal-Insulator transition in PrRu4P12 Reviewed
T. Takimoto
Journal of Physical Society of Japan 75 ( 3 ) 034714-1 - 034714-6 2006.3
Strong-coupling theory of superconductivity in a degenerate hubbard model Reviewed
T. Takimoto, T. Hotta, K. Ueda
Physical Review B 69 104504-1 - 104504-9 2004.3
Orbital fluctuation-induced triplet superconductivity : mechanism of superconductivity in Sr2RuO4 Reviewed
T. Takimoto
Physical Review B 62 ( 22 ) R14641 - R14644 2000.12
Anomalous properties around magnetic instability in heavy electron systems Reviewed
T. Moriya, T. Takimoto
Journal of Physical Society of Japan 64 ( 3 ) 960 - 969 1995.3
On the origin of CE-Type orbital fluctuations in the ferromagnetic metallic phase of La2-2xSr1+2xMn2O7 near x=0.4 Reviewed
D. K. Singh, K. H. Lee, T. Takimoto
Journal of Physical Society of Japan 84 064709-1 - 064709-7 2015.6
Order parameter with line nodes and s+--wave symmetry for the noncentrosymmetric superconductor Li2Pt3B Reviewed
S. P. Mukherjee, T. Takimoto
Physical Review B 86 134526-1 - 134526-9 2012.10
Phase diagram for a topological Kondo insulating system Reviewed
M.-T. Tran, T. Takimoto, K.-S. Kim
Physical Review B 85 125128-1 - 125128-11 2012.3
Nambu- Eliashberg theory for multiscale quantum criticality: Application to ferromagnetic quantum criticality in the surface of three-dimensional topological insulators Reviewed
K.-S. Kim, T. Takimoto
Physical Review B 83 245138-1 - 245138-13 2011.6
Signatures of hidden order symmetry in torque oscillations, elastic constant anomalies and field induced moments in URu2Si2 Reviewed
P. Thalmeier, T. Takimoto
Physical Review B 83 165110-1 - 165110-9 2011.4
Low- temperature electrical resistivity in paramagnetic spinel LiV2O4 Reviewed
V. Yushankhai, T. Takimoto, P. Thalmeier
Physical Review B 82 085112-1 - 085112-7 2010.8
Triplet cooper pairing by spin fluctuations peculiar to non-centrosymmetric system Reviewed
T.Takimoto, P. Thalmeier
Physica C 470 S566 - S567 2010
Triplet cooper pair formation by anomalous Spin fluctuations in mon-centrosymmetric superconductors Reviewed
T. Takimoto, P. Thalmeier
Journal of Physical Society of Japan 78 ( 10 ) 103703-1 - 103703-4 2009.10
Ferromagnetism and electronic structure of TmB2 Reviewed
Mori, T. Takimoto, A. Leithe-Jasper, R. Cardoso-Gil, W. Schnelle, G. Auffermann, H. Rosner, Y. Grin
Physical Review B 79 104418-1 - 104418-7 2009.3
Frustrated magnetism in vanadium oxides Reviewed
P. Thalmeier, B. Schmidt, V. Yushankhai, T. Takimoto
Acta Physica Polonica A 115 ( 1 ) 53 - 58 2009
Spin fluctuations proved by NMR in paramagnetic spinel LiV2O4:a self-consistent renormalization theory Reviewed
V. Yushankhai, T. Takimoto, P. Thalmeier
Journal of Physics: Condensed Matter 20 465221-1 - 465221-5 2008.11
Anomalous spin response in non-centrosymmetric compounds Reviewed
T. Takimoto
Journal of Physical Society of Japan 77 ( 11 ) 113706-1 - 113706-4 2008.11
Self-consistent renormalization theory of spin fluctuations in paramagnetic spinel LiV2O4 Reviewed
V. Yushankhai, P. Thalmeier, T. Takimoto
Physical Review B 77 125126-1 - 125126-6 2008.3
Theory of induced quadrupolar order in tetragonal YbRu2Ge2 Reviewed
T. Takimoto, P. Thalmeier
Physical Review B 77 045105-1 - 04510512 2008.1
Hexadecapole order in Pr-skutterudite Reviewed
T. Takimoto
Physica B 378-380 252 - 254 2006.5
Microscopic origin of magnetic anisotropy in f-electron systems Reviewed
T. Takimoto
Physica B 359-361 747 - 749 2005
Superconductivity in the orbital degenerate model for heavy fermion systems Reviewed
T. Takimoto, T. Hotta, K. Ueda
Journal of Physics: Condensed Matter 15 S2087 - S2093 2003.7
Tight-binding model for heavy fermion compounds: Construction of f-p model Reviewed
Maehira, T. Hotta, T. Takimoto, K. Ueda, A. Hasegawa
Acta Physica Polonica B 34 ( 2 ) 1023 - 1026 2003
Superconductivity and antiferromagnetism in the three-dimensional hubbard model Reviewed
T. Takimoto, T. Moriya
Physical Review B 66 134516-1 - 134516-7 2002.10
Spin-fluctuation- induced superconductivity controlled by orbital fluctuation Reviewed
T. Takimoto, T. Hotta, T. Maehira, K. Ueda
Journal of Physics: Condensed Matter 14 L369 - L375 2002.5
The resonance peak of dynamical susceptibility in spin-fluctuation-induced superconducting state Reviewed
T. Takimoto, T. Moriya
Journal of Physics and Chemistry of Solids 60 1075 - 1077 1999.2
Spin-fluctuation mediated thermal conductivity around the magnetic instability of CeNi2Ge2 Reviewed
S. Kambe, H. Suderow, T. Fukuhara, J. Flouquet, T. Takimoto
Journal of Low Temperature Physics 117 ( 1/2 ) 101 - 112 1999
Theory of Spin Fluctuation-Induced Superconductivity Based on a d-p Model II –Superconducting State- Reviewed
T. Takimoto, T. Moriya
Journal of Physical Society of Japan 67 ( 10 ) 3570 - 3579 1998.10
Theory of spin fluctuation-induced superconductivity based on a d-p model Reviewed
T. Takimoto, T. Moriya
Journal of Physical Society of Japan 66 ( 8 ) 2459 - 2465 1997.8
Relationship between resistivity and specific heat in heavy electron systems Reviewed
T. Takimoto, T. Moriya
Solid State Communiations 99 ( 6 ) 457 - 460 1996.6
Is SmB_6 a topological Kondo insulator?
Takimoto Tetsuya
Meeting abstracts of the Physical Society of Japan 68 ( 2 ) 544 - 544 2013.8
15aWD-3 Origin of magnetic anisotropy in f-electron systems
Takimoto Tetsuya
Meeting abstracts of the Physical Society of Japan 59 ( 2 ) 579 - 579 2004.8
Magnetic Anisotropy in the Antiferromagnetic State of CeRhIn_5
Takimoto Tetsuya
Meeting abstracts of the Physical Society of Japan 58 ( 2 ) 440 - 440 2003.8
Effect of Orbital Fluctuation on Triplet Superconductivity
Takimoto Tetsuya
Meeting abstracts of the Physical Society of Japan 57 ( 2 ) 506 - 506 2002.8
Superconductivity accompanied by Anisotropy near Antiferromagnetic Quantum Critical Point
Takimoto Tetsuya, Moriya Toru
Meeting abstracts of the Physical Society of Japan 55 ( 2 ) 517 - 517 2000.9
Hund-coupling effect of Sr_2RuO_4 : Mechanism of Superconductivity
Takimoto Tetsuya
Meeting abstracts of the Physical Society of Japan 55 ( 1 ) 470 - 470 2000.3
Spin Fluctuation-Induced Superconducting State -d-p model-
TAKIMOTO Tetsuya, MORIYA Toru
Meeting abstracts of the Physical Society of Japan 53 ( 2 ) 718 - 718 1998.9
日本物理学会論文賞
2016.3 日本物理学会
瀧本哲也
日本物理学会論文賞
2003.3 日本物理学会
守谷 亨, 瀧本哲也
Theoretical Research of Topological Phenomena in Strongly Correlated Electronic Systems with High Degrees of Freedom
Grant number：17K05540
2017.4 - 2020.3
System name：Grants-in-Aid for Scientific Research
Research category：Grant-in-Aid for Scientific Research (C)
Awarding organization：Japan Society for the Promotion of Science
Takimoto Tetsuya
Grant amount：\3770000 （ Direct Cost: \2900000 、 Indirect Cost：\870000 ）
In order to construct a theoretical model with large degrees of freedom, we consider first all electron-hole pairs in a regular tetrahedron, where an s-orbital is considered at each corner-site of the regular tetrahedron. Then, these electron-hole pair operators are classified into irreducible representations of the tetrahedral group Td, which corresponds to the crystal coordinate system. Among 64 types of electron-hole operators totally, there are 12 types of spin configuration operators, including the All-In-All-Out spin configuration operator (SPO) belonging to A2 representation and SPO belonging to E representation. Summing up electron-hole operators with respect to the unit cell, the order parameter belonging to the representation is obtained to describe the corresponding phase transition. The purpose of the study is to search the topological transition in the ordered state with the order parameter. We also generalize our theory to the system with orbital degree of freedom.
軌道自由度に関する臨界点近傍のゆらぎによる効果についての理論的研究
Grant number：17740227
2005 - 2007
System name：科学研究費助成事業
Research category：若手研究(B)
Awarding organization：日本学術振興会
瀧本 哲也
Grant amount：\2800000 （ Direct Cost: \2800000 ）
「研究目的」では、スピン秩序相付近と軌道秩序相付近の両方を扱える理論を構築し、これらのゆらぎからの様々な物理量への寄与を明らかにし、特に軌道自由度に関する量子臨界点付近での異常性を調べる、とした。報告者は対象物質として充填スクッテルダイト化合物を選んだ。この系は立方晶の結晶構造を持ち、希土類イオンの充填に伴ってf-電子の縮重度(軌道自由度)により多くの興味深い物性を示す。その中の代表物質の一つであるPrRu_4P_<12>は温度の低下に伴って63Kにおいて金属相から非磁性絶縁体相への金属絶縁体転移を示す。最近の実験結果によると、この低温相ではPrイオン周辺の対称性を保ったまま構造変化を起こし、二つの副格子から成っていることが示された。同時に、一方の副格子のPrイオンの結晶場基底状態は高温相と同じであるが、他方の副格子では第一励起状態と入れ替わっていることが観測された。従来はこの金属絶縁体転移にはf-電子は関わっていないと考えられていたため、これらの実験結果の解釈が問題とされていた。
報告者はこの現象に対して微視的理論を展開した。軌道縮退周期的アンダーソン模型から出発し、Schrieffer-Wolff変換を用いてスピン秩序相付近と軌道秩序相付近の両方を扱える有効ハミルトニアンを導出した。PrRu_4P_<12>に対してすでに知られている条件を課すと、有効ハミルトニアンは通常のf-電子と伝導電子の擬スピン間の交換相互作用項と、局所的な対称性を破らないf-電子の十六重極子と伝導電子の電荷密度の積に比例した項から成ることが示された。さらにPrイオンの結晶場基底状態が擬スピン一重項であることにより、擬スピン秩序転移が抑えられる一方で十六重極子秩序転移が誘発され同時に伝導電子の状態密度にエネルギーギャップが生じた。この秩序状態は上述の実験結果を矛盾なく説明するため、報告者はPrRu_4P_<12>の異常性である金属絶縁体転移がf-電子の内部自由度である十六重極子の反強的秩序によるものだと提案した。
応用量子力学
先端科学技術総論
論文輪講II
応用統計物理
論文輪講I
卒業研究
機能材料科学総論I
物理数学
材料科学概論
論文輪講
固体材料物性
物質構造論
応用数理A
技術英語I
技術英語II
国際工学概論
金属材料物性論
工学リテラシー入門(化学材料分野)
卒業研修
先端科学技術総論
論文輪講
技術英語
自然科学総論Ⅱ
機能材料科学総論Ⅰ
卒業研究
材料科学概論
基礎解析力学
物質構造論
固体材料物性
統計物理応用・演習
物理数学
